I couldn't get through more than about 35 seconds or so and I can't understand what either character is saying so I'm just going to ignore that shit and say this:
Flat Earthers spent 20 grand on a military-grade laser gyroscope to measure the supposed rotation of the earth. If the earth is round and rotates ~360 degrees every 24 hours then after an hour from zeroing it out the gyroscope sitting stationary should then read 15 degrees.
They did the experiment, it read 15 degrees, and they went UHH UHH SHIT DON'T TELL ANYBODY MAYBE THERE WAS UHH UHH A RADIATION ISSUE FROM THE MAGIC SKYBOX!?
It's just a cult.