It looks to me like it's making fun of the really bad brain worms that permeate the trans 4chan community. There's a very specific type of brain wormed in-group jargon being made fun of here. The orange stick figure is saying they'll never be orange but we can clearly see they're just... orange. The brain worms are so bad that they believe even while being orange, they aren't actually. The green stick figure, not being involved with the community or perspective of it, is a representation of the few people trying to break the brain worms within the community. The author knows exactly where the terms being parodied come from and wrote it for that audience
It's the kind of thing that's utterly incomprehensible to anyone who isn't familiar with 4tran or tttt
Consider that people before transition are not necessarily any different from any other people. You can have very racist, transphobic, alt-right people secretly harboring trans feelings themselves. Sometimes people will turn to those spaces as a coping mechanism and then they become entrenched and invested in the communities. Just because they eventually finally accept their transness doesn't mean they're willing to let go of it entirely or the personality archetype they've developed as a part of it. If they leave it entirely just because they transitioned , they may not have another community they feel enough a part of to fall back on. Everyone needs and wants some sort of feeling of community even when it isn't good for them. It can be very hard to break out of toxic spaces when it's the only space you know and it's practically defined you as a person, sometimes for most people's adult lives