Your response is the exact type of response he tries to get from people. My dad, him, and me all enjoy poking people, it’s a genetic thing I think.

Nah, it's an increasingly common nihilistic attitude we see in society - people reveling in eroding of all moral principles, because it's far easier than actually getting recognition for doing something enriching with their lives. Angry Incels being the ultimate epitome of this.

Not saying your brother is an incel, but "trolling for lolz" is definitely on the spectrum.

How upset you are by the thought of my brother teasing people by pretending to genuinely believe the earth is flat is making me smile!

Good for you champ. Glad it was so easy to please you.