Honestly, that's fine. The Obama campaign was lauded for similar social advertising, and had a direct relationship with facebook. That's how political campaigning works.
The converse is billionaires advocating for information control, and pushing to see that only those they endorse have a platform. So fat as I'm aware, Thiel hasn't done that. My position on him would change significantly if he had.
At its most extreme, suppressing information gives your subject no such freedom. You put them in an intellectual cage. You deny them the ability to choose their convictions.
People are not rational actors no matter how much we want them to be.
Turns out it’s really simple to convince people to act against their own self interest on a mass scale with a few psychological tricks.
Someone who knowingly and repeatedly spent their time, money and resources doing that for their own personal gain when they were already at the top of society is worthy of contempt and maybe worse.
Concealing dangerous information from them turns them into intellectual eunichs, and strip much of the vitality from the human experience.
Admittedly not at all for their own good and purely in pursuit of his own goals.
He is widely acknowledged as a big part of the reason why Facebook is “the way it is” as this pipeline of radicalisation for a huge number of people.
He then repeatedly abused his access to that kind of thing by working with groups like Cambridge Analytica and Steve Bannon etc for explicitly partisan purposes to further fuck with vulnerable people.
I can’t ever forgive that.