This is a really good point, and probably why so many burner accounts have been using it as a test case. It plays off of the general lack of understanding around trans issues amongst the general public, and tries to turn that ignorance into a valid stance with 'but it's ok to be ignorant and treat it as a joke, because it doesn't matter anyway'. Clearly it does matter when we have a small horde of people desperate to ignore Era's TOS just as long as they can get a dig in about how trans issues are just a joke.It's often more socially acceptable than other bigotries so it's a good way to test the waters. Holding that door open is a great way to signal that it's safe to start bringing in and building up to other prejudices and hatreds.
I don't get how anyone can think a forum setup with a mod/admin team robustly defending its more vulnerable communities is somehow a bad thing. There are thousands of cesspits where you can shitpost your personal bigotry about whoever you like on the internet, and yet one island of only 40,000 members is apparently a problem worth whining about, infiltrating and boasting about being banned from for offering something else.
It's a scale thing, these idiots like to have a go at any community they see as small and/or vulnerable, going to pathetically incredible lengths to do so, without realising that such vindictiveness and the need for small groups to stick together is why Era came about in the first place.