there are still many people who believe the earth is flat... (✪ฺܫ✪ฺ)
I once went to a village and then met one of the old ladies there, she said that the earth was flat and had a tip there, honestly it made me laugh a little.
But the real point isn't those who believe it. Nor is it those who disbeleive it. Rather, it's the ones who know it.
Believing implies opinion. Knowing implies science.

Those are understandably good and valid points to consider under the circumstances since a lot of other people often do a "knee-jerk reaction" instead, rather than having an open mind and discussion about ideas.
Honestly, fiction or non-fiction at all re: flat earth theories (or whatever theories for that matter), I don't know why those agains flat earthers are "butt hurt" more often than not.