Well, if you scroll down somewhat you can see that this person thinks that "MOGAI" (read: attention seeking wannabes) and non-dysphoric trans people "don't harm the LGBT community". I'd argue otherwise.

First off, the MOGAI attention seekers absolutely can harm the LGBT community, especially the T. By people claiming to be 'stargender', or saying that their gender is "infinite and wondrous and impossible to embrace" and all that crap, they're actively mocking transgender/transsexual issues. It's a bit of a gap between "I feel uncomfortable in my own body" to "I want to be a fucking star". Now, the made-up sexualities could also cause some trouble for the LGB, but I feel like the concept of "I feel the same way about the same sex that you do about the opposite" is easier to consume for the average Joe than "I suffer from a condition called gender dysphoria" and all that. Chances are they'll conflate it with this attention-seeking bollocks, recognise it as such, and immediately assume that all trans people are attention seekers. This is a very long winded way of saying "it does cause harm to the LGBT community".

Now, non-dysphoric trans people are a bit similar to the "MOGAI" lot. Chances are they think that because they sometimes crossdress that they're trans, or something like that. So that could make people think that, when they find out that somebody is (legitimately) trans, "well they're probably just a very dedicated crossdresser" and therefore don't have to respect pronouns and all that, which can effect legitimate trans people with dysphoria.

Sorry if this isn't quite with the mood of the sub, but after reading it, i felt like it needs to be said.