It's because it's true emo. I used to laugh at it as well. Until for whatever reason last year I looked into it to debunk it and I ended up debunking globe earth. I didn't tell anyone for a while because I thought it was crazy. Truth is we've all been had.
The question is why would they lie to us? Easy...To cast doubt that there is a God. Then you can control the minds of the masses and make up shit like evolution and big bang.
I'm an emo, sayeth the black hitler drinking whiskey in a bar in las vegas, watching a basketball game, preaching the word of black bible. Seems legit.
I agree with you what you said there regarding casting doubt that there is a god the creator and the video explains it. Without the globe model, the big bang model wouldn't be considered, without the big bang model, the theory of evolution wouldn't be on the table, without the theory of evolution, extraterrestrials seeding mankind is over, without all these lies people start thinking about the creator, who we are, where we come from.
Well, great, the earth is flat then. Well, lets just say that there is more evidence on flat earth than there is of the spheric model. There are also no authentic pictures where there's a crystal clear picture of our earth all alone. I shall post a picture of my abs if anyone can find a picture of earth that wasn't modified/photoshopped at all