Well, people DIE (and on a massive scale) due to religion.
Politics is extremely volatile, also.
In internet world, though, yeah, flat earth brings out more hatred and irrational behavior than those topics.
No doubt.
Some folks just simply -----> LOSE IT <----- when this topic is brought into their kitchen.
I'm convinced a lot of the globe earth loving keyboard warriors would round all of us "flat earthers" up and toss us into an oven if they could.
Yep.