And of course, you ignore the simple issues directly relating to what you claimed you would stick to until "I understood".
Once more, does this mean I understand and your model is wrong?
If not, why not actually provide an explanation?
Explain how the introduced 1 kg weight affects the pressure gauge but not the scale, without 1 explanation contradicting the other and without contradicting the idea that pressure is what causes things to fall.
As a reminder, saying the newly introduced 1 kg weight is using the floor of the container for resistance applies to both the scale and the pressure gauge meaning neither should record an increase. That means that explanation doesn't hold.
As a reminder, saying that the increase in pressure acts on the scale from all directions (which needs to include upwards from below also applies to pressure in general, meaning the air pressure would normally apply a force upwards from below meaning the scale would not record any weight at all from the displacement of atmosphere.
Can you actually address this issue, or is your model wrong?
Every action must have an equal and opposite reaction somewhere. It has to.
You seem to reject that for rockets, but lets not get distracted.
As already pointed out, that is already there. You have the 2 tanks.
They have the action and reaction.
It absolutely does but you can't understand it from my side.
The issue isn't understanding, it is your model not working.
Water pressure only pushes things up if those things are less dense than the water they are in.
No, it pushes everything in it up.
This produces a clearly measurable change in weight.
It is just that for objects more dense than the water, gravity acting directly on the object still wins and pushes the object down so the net force (from gravity and buoyancy) is down.
This is just another contradiction of your model.
You say that it all just pushes down, until you need it to push up to match reality.
They get crushed up, not from below but from all around
How?
In order to be pushed up, it needs a force from below, or are you now saying the water magically pushes the object up from the side or the top?
Either way, you no longer have it just pushing down.
If there is this force pushing things up, why should the density of the object matter at all?
There is no reason for your magic air to crush most things down but then magically change and push some things up.
You do yourself no favours playing this game.
And more deflection from simple issues which show your model to be nonsense.
You do yourself no favours by repeatedly ignoring these issues.
All it does is show that you have no answer, that your model does not work.
Once more, in every case of watching air pressure working, we see it push from regions of high pressure to regions of low pressure to balance that pressure.
This is the basis of an internal combustion engine, where the fuel is ignited, causing it to expand and reach a high pressure, which then pushes the piston towards a region of lower pressure.
Pumps work by displacing air to create a pressure differential to have the air equalise. If air magically forced things from low to high pressure, there would be no need for a pump.
Pneumatic tools work on the high pressure air pushing the components towards lower pressure.
This then also matches how buoyancy works. This pressure gradient in the atmosphere or in the any fluid pushing the object from a higher pressure to a lower pressure.
Yet you claim the atmosphere magically works in defiance of these well established principles and instead magically pushes objects down from a region of low pressure to a region of high pressure, with the air below the object just chilling and not caring to apply a force, until it needs to do so to make your model work.