ships getting cut off is proof of curvature.
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Or your trolling.
Here is something you apparently haven't realized yet. Some people like to create youtube channels and get subscribers. Doing videos about flat earth experiments is a good way to do that.
The videos you've posted are goofy, those are not proofs of anything. They are mostly guys just talking science-babble and getting youtube hits.
if you find that video of the guy on his snowmobile a compelling proof of flat earth then i am 100% convinced you just want to believe.
and i also think you know deep down, after thinking about a 17 hour day in Argentina, that flat earth is bullshit. But at this point, you don't want to look stupid for admitting you got so into it, but it was untrue.
That's my take anyway. I'm sure you don't agree but that's my read of the situation.
I'm honest and can admit that I don't know everything about f.e. and cannot explain everything. I do know the math for the supposed convex curvature and that it cannot be detected or measured on earth. If it could be measured you would have provided the formula or experiment by a scientist or video of a lecture that we could then test and verify.