All I see here is an effective search function. You look up "paradoxal" and you get directed to "paradox". Or did you not bother to look at the page beyond its URL and title?
Ah, how delightful! You accuse me of not having read the page, having not read it yourself!
Related forms
par·a·dox·i·cal, par·a·dox·al, adjective
The only words defined on that page are paradox and paradoxical.
Incorrect. "Paradoxal", a non-existent word, is proposed as an alternative form of "paradoxical". You managed to notice it yourself, yet you contradict it here.
The only link to the rare spelling is "Sometimes, par·a·dox·al" in the latter definition. I don't see any claim that this is correct.
Perhaps you need to revisit your understanding of what a dictionary is. Non-existent words have no place in a reputable dictionary, based on the virtue that a dictionary is a collection of words.
Do you have anything at all to add to this discussion?
Indeed. I have already added it. Here's a reminder for you:
Please do not use dictionaries known to contain non-existent words in debates.
Of course, had you read my post in context, you would notice that I said this in support of your argument. However, you're too busy trying to attack everyone to even notice that you're attacking RE'ers' own argument.