You can’t claim not to suffer fools when the power not to suffer them doesn’t lie with you.

I think you’re confused about the meaning of “suffering fools”. You can suffer fools by being polite to them, or refuse to suffer them by being real with them.

Here is Merriam Webster’s definition of this incredibly common colloquialism.

Now, as a practical example, me sharing that definition with you is being polite to a moron (i.e suffering a fool). You had every opportunity to look it up before spouting off, but you didn’t. You just chose to show your ignorance instead. When I say that I don’t suffer fools gladly, I’m not making up my own definition as you seem to suggest; I’m using the widely understood one.

The way to exercise your power to not suffer fools in that situation would have been to stop posting or stop insulting people, not keep going and get banned.

Why do I give a shit about being banned from a sub filled with morons? They’re obviously free to ban anybody they’d like, for any stupid reason they’d like. For example, they banned you for having the handle “gayhitler420”, and they banned me for asking politely if someone suffered brain injury as a child. Both of which are, in my opinion at least, incredibly snowflakey reasons to ban someone. If being banned by a group of shiteating howler monkeys is the price to pay for telling them that they are morons, well, I pay it gladly.