That's how it worked for me. I was initially not in favor of FE, but in the interests of intellectual dishonestly I deliberately put aside my prior beliefs and felt that I needed to give their arguments a "fair shake". Numerous prominent FEs started out as FE "debunkers" but then ended up "converted".
As I've said before, with only a few exceptions EVERY FLAT EARTH BELIEVER started out believing in the Globe.
Perhaps most of them never stopped to think about it much or look into it.
But it's not as though the average Flat Earthers was poorly and half-heartedly homeschooled by high school dropout parents (who might possibly be cousins or siblings), growing up in a trailer in rural Appalachia. And completely isolated from the world, of course: no TV, Internet, books, or outside influences.
I'm sure some rabid anti-Flat Earth youtubers would LIKE for that to be the case -- but it isn't. The FACT is that virtually all Flat Earthers know *more* about the "official Globe paradigm teachings" than the average person. This has been demonstrated many times to my satisfaction.
Most people are just -- ignorant. They don't know the circuмference of the earth, not even roughly. They don't know the supposed distance to the sun -- not even close. It's really bad. Their understanding of the "globe earth" comes from the simple propaganda they received in elementary school.
Columbus in 1492, ships sailing over the horizon, styrofoam models of the Solar System, and all that.
Public Schools have done their job, that's all I'm saying.