... without telling me you don't know what a cult is.
I grew up in a cult-ish church. It had some very unpleasant aspects to it indeed. The very concept of the GC movement as a cult utterly baffles me, and irritates me quite a bit, I must admit.
Where is our Leader? Some say JKR is that, even though she obviously didn't create the movement, since she joined it after it already existed. Okay, but then where is the cult of personality? Where is the hanging onto her every word? Where is the compulsory study of her life? Where is the regular and compulsory show of support of her as our leader?
What are the specific beliefs that random people outside the movement don't believe? "Men can't become women and vice versa" is not such a belief, since loads of people who would never call themselves GC also believe it. So what are our specific beliefs?
What is the rite of entry into the movement? How does one know that they themselves or someone else is a member of the movement?
Where are the big gatherings where the leaders speak The Word? Where are the regular gatherings where the members reinforce each other's beliefs?
What are the demands made of the members? Where are the compulsory meetings? Where are the financial requirements? Where are the specific behaviours we have to adhere to?
Where are the punishments for leaving the group? How do you even know you've left at all? And where are the stories of abuse and control told by the former members?
I could go on forever.
Accusing GC people of belonging to a cult is just as ridiculous and offensive as claiming, for example, that there's a trans genocide going on. It's deliberately appropriating the real suffering of other people to make a completely false and unsupportable point because there's no actual valid point to make. It's utterly reprehensible and shameful.