Summary of following:
Using the theistic mindset, the argument is mute, and can basically boil down to "God exists, therefore God exists". It doesn't prove anything, it just baselessly asserts it.
Either way, the theist is the one that has the problem in the argument. The atheist's responses are perfectly rational due to the ambiguity of the theist's "everything" and the special pleading/baselessly assertions made by the theist.
Next questions:
Atheist mindset:
Then what caused God?
Theistic mindset (and what will likely be a subsequent question for the atheistic mindset):
Why should I assume the universe is a created thing (has a cause) and your god is not?
"Everything" according to atheist is everything that exists - fine
"Everything" according to theists is everything created - key point
So theists, because of their indoctrination and brainwashing need to discard the very meaning of words.
Take a moment to understand this:
The argument is meant to be an argument to convince someone. As such, that argument cannot start out from the theistic mindset. It cannot start with the assumption that god exists and created everything except itself. It needs to start from the atheistic mindset.
And as I said before, with the theistic mindset, it is a tautology which makes the entire argument pointless as it changes the first premise from "everything has a cause" to "everything that has a cause (specifically a creator) has a cause".
This means instead of using this assumption to show the universe needs a cause, you need to show the universe has a creator to then claim it has a cause.
This means you need to prove this god of yours exists and created the universe (to show the universe is a creation), before being able to use the universe as part of a proof of a god based upon the assumption created things have a cause. So you would need to prove God exists to prove God exists.
Notice a problem with that?
It is also pure bullshit.
The theistic mindset does not declare everything to mean everything that is created. That would be created things. It also wouldn't include things which are products of nature, which in the theistic worldview are not created but are products of nature. They would be part of "creation", but not created things.
It would be better if you changed it to everything that is part of creation or everything that has a cause, or more simply (to help show the dishonesty) everything except god.
But notice something they all have in common? They all follow the pattern of everything that is X or everything that is not Y. This means you are already using the word everything and realise you need to qualify it. This means that everything doesn't just mean everything created. You realise it means everything, but you need to be dishonest and cover that up to make the argument work.
Everything is the super-set. Everything that is X is a subset of everything. That means if you accept the set of everything that exists as one possible set (which is really just a subset of everything in more complex philosophy which deals with possible things, but they wouldn't exist in reality and thus can be ignored), then everything without qualifiers would include everything in that set, which would include any created or uncreated things that exist.
So if you want to mean something other than everything, use a different word. Qualify it to remove ambiguity. Attack the theist for making such a vague, ambiguous argument, not the atheist for following the simple meaning of it.
But again, you can't, as it would show the argument to be complete crap.
Again, if that was going to be such an issue, you should have attacked the hypothetical theist (and pretty much all philosophers and con men that have used the first cause argument) for just using everything rather than all of creation or some crap like that.
But you can't, because it then shows the argument to be pure bullshit and you don't want that. Your indoctrinated theistic mindset can't allow that.
So when the question means two different things even if just slightly then how can two different questions unconditionally have the same answer?
They don't. It is just dishonest theistic manipulation of it.
Again, I understand fine, I just see through the dishonest bullshit.
Q. Does everything need a cause?
(answer according to above belief system of "everything")
Atheist answer: Yes everything has a cause
Theist answer: Yes everything has a cause
Until you grasp the context, reference and definition you will remain confused.
So, according to the atheist mindset, the one which must be used in a proof of God's existence (otherwise it is simply assuming a god exists to prove a god exists which isn't a proof at all), God, being part of everything, must have a cause.
As such, the atheist's question is perfectly valid.
With the theistic "definition", the argument is just as valid (and makes as much sense) as this:
Everything that is red is red.
Thus the universe has a cause.
This cause is God.
It makes the first premise entirely pointless and effectively starts the argument by asserting the universe has a cause, which is no better than asserting God has a cause.
Thus it makes sense for why the atheist would question what caused God and then ask why the theist asserts that the universe has a cause and God doesn't and want proof of that claim before accepting the rest of the argument.
Now do you understand the problem with this argument and why the atheist asked such a question?
Again, I do understand, I just see through the dishonest bullshit. I am not confused in the slightest.
So next question:
Atheist mindset:
Then what caused God?
Theistic mindset (and what will likely be a subsequent question for the atheistic mindset):
Why should I assume the universe is a created thing (has a cause) and your god is not?