A couple of people I met at a trans support group turned out to be into BDSM stuff. Not that they weren't trans - I have no doubt that they were - but they were into stuff that I am not into. I got invited to join them, but I just politely declined and said that I am not into that, thank you.
I have nothing against whatever kink people are into, but sometimes there is an implied suggestion that, if you are trans, you are automatically into kinky stuff, too. The kink doesn't offend me, but the suggestion that I should be into it too does.