[ If Facebook was a thing in the sixties, it absolutely would. ]

People don't like the thought of having their free will being taken away.

[ That doesn't seem unreasonable to him. He would certainly be concerned to have a telepath as an enemy, knowing all the ways they could manipulate him. Having his own freedom taken from him in the past has left him particularly averse to the notion. ]

That said, whether or not I'd be willing to let you use your powers is a moot point. You are more powerful than that, no one can control you in that way.

[ It's rather the other way around. Erik certainly wouldn't oppose her using her powers if it benefitted a cause he stands for, for instance. ]