It's obviously flat. The only ones claiming pseudoscience here are the Round Earthers who claim the unobserved and unexperienced without any experimental evidence whatsoever.
It's not obviously flat. That's why this forum exists. That's why bendy light gets wheeled out.
The current scientific view says the earth is round: Astronomers, geologists, meteorologists, climateographers, cartographers, butchers, bakers, candlestick makers: The all agree on one thing.
Wikipedia lists the following traits as the mark of pseudoscience. I've added some relevant examples for FET :
Use of vague, exaggerated or untestable claims - Actually, the observed shape of the earth at ground level is untestable
Over-reliance on confirmation rather than refutation - "It's up to the ney-sayers to prove us wrong; We know we're right".
Lack of openness to testing by other experts - No formal peer-review. Anything else put down to lack of "good telescope" or BLight.
Absence of progress - Bendy light / Perspective / Celestial Gears still cannot explain the rotating heavens
Personalization of issues - FETs refer to themselves as "free thinkers"; everyone else is indoctrinated.
Use of misleading language - "occam's razor", "proof", "truth", "science". They've all been abused.