If they don’t control most of the nodes in-between they can control all the exit nodes they want. If you connect though 3 Tor nodes, as soon as one of them is not controlled by them they likely can’t identify you.
That’s not to say that they don’t control most of the nodes, and your traffic likely goes through NSA nodes exclusively
Because reddit makes you think it’s needed. It’s cheeky you have to skip the email entry or leave it empty with nothing telling you that it’s optional.