Dude, I had a friend who constantly harangued me[1] to look into such claims over a period of six months.

He also made the same claims that you do above (and more!) and stupid as I was, I attempted to substantiate them.

This puts me in the unusual position of being extremely liberal, but also very familiar with the lines of 'evidence' that people use for these types of claims, and many more conspiracy theories.

I wasn't able to find support for any of it.

[1] https://en.wikipedia.org/wiki/Sealioning