You could argue they're being more honest or something... but I just don't know what these guys think they are going to accomplish

I do. Here...

They're potentially going to make the girl feel uncomfortable or also make them take their vids down.

There ya go.

I'm kind of convinced that people making these comments aren't even MAPs

Bingo.

I tend less towards "gets a thrill making prank calls" and more towards "knows exactly what they're going to accomplish."

Thankfully, they usually don't.