I watched part of a 'flat earth' video, where a number of people claiming to be pilots (being in cockpits and doing pilot stuff in the video) said they think the earth is flat. As jack asked, what would knowing their names do for you?

I don't know why you're letting jack expose you as a believer, and not a knower. It's not a good look, because it's a position of ignorance, not of knowledge. If you simply "believe in" the shape of the earth, then the actual shape doesn't matter.