I don't see why we should do other people's leg work for them.
Well, no. That's quite right.
But the problem with not using preferred pronouns, especially online, is the entire debate gets binned before it's started.
It wasn't long ago that MNHQ automatically deleted posts (and entire threads), on the basis of misgendering.
They seem to be allowing a little more questioning now, along with the rest of mainstream media and people in general.
Personally I'm relieved to refer to someone by their biological sex, because I agree language is crucial to perception and, indeed, thought.
But in terms of fixing labels, and talking about the issue in general. If you want to have any kind of discussion, that's the way it goes. You can make your position clear and then leave the discussion. But any kind of engagement requires this to and fro of what constitutes what, and what the words really mean.
One man's harmless transwoman is another mans raging fetishist with a sexual agenda.
Many people have completely changed their minds, once they realise that these two things aren't the same. We wouldn't be able to do that without talking about these extra categories.