This is a dangerous mindset. People can and do seriously believe in utterly stupid things like flat earth. The thing is, being a flat earther kind of ruins your life. Everyone you know who isn’t a flat earther (so, most people) thinks you’re a complete moron and have gone off the deep end, and good luck getting a job at a normal company if your entire online presence is promoting a belief in flat earth. It’s not really something you can do casually- it’s all or nothing.