The forums are way different.
Maybe, but lemme explain my reasoning.
First, he's had experience with the game. While the forums are a very different environment, the game still has the same community and what not.
Secondly, his grammar is not terrible. While it's not perfect, it's too neat to be an autistic kid that just wandered on these forums.
Furthermore, he didn't spam emotes that much. Sure, he posted 5 cookies but I've seen well over 15 emotes in a post from a stupid kid. While it's enough to spark controversy, he's not a sign of dumbness.
Idk, he seems like a troll to me.