It's actually pretty cool for me to see flat earth theory come back around
I used to browse the Flat Earth Society forums like 10 years ago; I'd memorize stuff from their wiki and use it to annoy my friends at school, bait people into random arguments
from what I could tell it was mostly comprised of physics undergrads who spent their free time trolling people on the internet, though I guess that demographic has shifted towards conspiracy theorists which is pretty interesting
It's a good intellectual exercise to contemplate; if you get super deep into the facts on either side of the debate it becomes less about physics and more about philosophy, how knowledge can be derived in more ways than axioms and logic, what knowledge means even; not trying to be condescending to anyone, whatever side of the debate you fall sincerely or otherwise you have a special place in my heart
Peace