Hard disagree.

Calling an asshole an asshole has no oppressive or marginalising power. It is a direct consequence of someone's behaviour, and has no impact on anyone but the asshole being called an asshole. Take it a step further and switch "asshole" to "Nazi" then go read about the paradox of tolerance and the social contract theory that resolves it.

Misgendering on the other hand (just like using sexist, racist, ableist and so on language) reinforces the existing structures of marginalising and oppressive powers, and has a deep and harmful impact not on the, for example, transphobe you're misgendering, but on trans people you're supposedly attacking the transphobe to defend.

This outrageous comparison between someone shitty being called shitty, and a transphobe being misgendered, is exactly the kind of bullshit bigots and other bullies twist to make themselves the victims and whine about being oppressed when they are the ones oppressing others.

Don't buy in to it, and definitely don't play along, unless you want to enable them.