[bryanrasmussen]

but if they say you copied content that you created yourself that seems slanderous, surely that isn't bound by arbitration clauses.

[foldr]

It's not slander if they just say it to you. They'd have to say in in some kind of public venue.

[prawn]

In these situations (AdSense too), they barely give a reason for your removal from the program. It seems like you almost never have recourse besides trying to raise a fuss on social media, and if you don't have clout, that will almost never amount to anything.