no. There's history to the term that's not captured by simply giving its "definition" (though different people would define it differently, so even that is hard).

Think of it like the self-diagnosis discourse. Some autistic people never get diagnosed, because you know, there's no need if your symptoms are obvious. Some people are annoyed by people who they perceive to be "faking" autism, so they take the extreme position that only diagnosed people are allowed to call themselves autistic.

For Truscum, this often translates into "you can't be trans if your dysphoria wasn't confirmed by a doctor" (not a possibility for most). Or more extreme: "You can't be trans if you do not have significant enough trauma from feeling misplaced in society, otherwise you could just be faking it".