Doesn't really bother me much. Ignorance is ignorance, it doesn't need to have malice behind it. If it does, then that is something else.
As a joke, I don't care. Jokes sometimes don't look attractive in unstructured form.
What really does bother me is the intellectual strand (that has access to funding, lawmakers, the next generation of students, and should know better) saying things about privilege and rapists and pantomime dames. The 'transsexuals rape women' is particularly offensive and something I've never got over since I first read it.
The violence - and the privilege - of those words expressing that sentiment is breathtaking. That is more than derogatory, it is genuinely violent (and I say this as someone who's been on the end of a sex crime) - if the term rape can be broadened to that degree, then it's broad enough to include those flinging it at transsexuals, seemingly without the slightest awareness or care of who is on the receiving end.
There are at least two very prominent intellectuals who are known for saying it, one of whom I admire generally and have bought some of her other work, but that is a red line. And they have become known for saying it, and standing by it. The first time I heard it was October 1999 (remember it vividly - including the debate in school the following day after it was broadcast - during which I remained, unusually, completely silent) and I was astonished. I've since heard several people defend those sentiments on the grounds that the two in question have done lots of other great work, and therefore have earned their voice.
I'm not a fan of 'no platforming', not in this case either, but to me that's not academic debate - it's not up for debate by people who aren't on the end of it, the same as racism isn't - it's hate speech, and it should be dealt with as such. I don't think no platforming does deal with it, it just gives the perpetrator an excuse to claim victimhood and say 'what are you scared of? come and debate with me then' - frankly no, you don't deserve to demand that someone shares their deepest feelings about their identity on a stage - nobody else is ever granted that right, how dare you demand it with such a straight face.
For instance, just like a racist, a racist can speak on a variety of topics - let's say the environment for the sake of an example - and be debated with, and expect to be debated with. Providing they don't cross that line, beyond which there is only ever going to a very hurt group of people, listening to a steam of violent garbage about themselves, voiced by someone who hasn't got a blind clue.