Difference is, those saying the Earth was flat were ignoring known science. Just like those who are denying that everywhere we look in outer space, we only find uninhabitable, dead rocks.
Everywhere they sailed west it was just more ocean.
Until Columbus.
You might be right. It may just be rocks out there.
It might be rocks full of H3 and trace metals could power the world for 100,000 years.
It’s like being a baby. Crawling is just fine and walking is very unsteady. But then you walk fine and can run. Gotta take that first step to find out.