It’s a charitable interpretation of OP’s intended meaning. I’m not disagreeing that there are nonbinary trans Thai people. Do you really think this meme is a joke about the subtleties of Thai sex worker’s identities? This is clearly about finding out if a sex worker is trans by asking if they are actually a boy.
Also, OP initially defends the post by saying they find trans sex workers sexy as hell. For real?
I don’t think the distinction between poster and meme creator is particularly meaningful here. I also think that OP may have meant well. What exactly this meme is making fun of isn’t as clear as you make it out to be. It seems like a somewhat lazy setup(which is fine, not hating on shitposting) for the punchline more than something directed at sex tourists, to me anyway. The downvotes that lileath got were probably unwarranted, because there is a discussion to be had about the transphobia in this meme. Edit. Especially because the punchline is literally transphobia, whether intended by OP/ meme creator or not.