Specifically? That would depend on each case individually.
You’ll have noticed the forum rule prohibiting ‘homophobia, transphobia, and other forms of hate speech’.
technically, deliberate misgendering can be seen as transphobia hate speech. (Which incidentally is a term I have my own issues with, but that’s another topic). I think context and intent are very important. Most of the time the answer will be obvious, but not always.
I agree with the above, though: this is about manners, not pronouns. The forum rules tell you what standards of manners are expected of you here. If you deliberately ignore any of those rules for whatever reason then you should expect the sanctions described in the rules.
The rules don’t state ‘these only apply if you’re not talking about pronouns’ ; they apply all the time, to everyone.
What seems to be happening is a load of folks arguing under the misconception that the extant forum rules don’t or shouldn’t apply to them, for a variety of reasons. They are asking for very special treatment.
Which is why I have been very keen for everyone to read those rules. If folks find them too challenging to follow, then they don’t have to post here. No-one is compelled to do that.
I can’t help but notice that no-one -no-one- has complained specifically about not being allowed to make transphobic posts- which could include deliberate misgendering of a trans person. All these righteous champions of liberty are okay with that, but completely lose their ■■■■ at not being able to insult non-binary people, and only non-binary people? Yes, I know it’s not the same. But certainly within the same field.
This strikes me as very odd indeed. Utterly bewildering, in fact.