IDK. Think you're reading too much into that. He's 13. I don't know many 13yos perfectly articulate in email form, but he clearly indicates "happened again" meaning this isn't the first time the LGBQT topic was dropped into an unrelated assignment/topic. And he's simply questioning why LGBQT is being introduced to an assignment specific to black history month.

If you were asked to demonstrate how to make a peanut butter and jelly sandwich, would you bring pickles into the demonstration?

I personally know this kid and trust me, he's no "genius" or spoiled 2yo brat. But he is a critical thinker who questions everything and can sniff out B.S. better than most 13yos I know.