Fortunately, Facebooks ToS[0] is not full of legalese or jargon, and I'm sure anybody with enough technological education to sign up for Facebook can understand it too.
Claiming the average person is able to understand scope of that document— and the likely 1000s of internal documents related to it, and the 100s of thousand pages of related legal code and case law is a stretch.
Document also does not disclose Facebook is subject to secret court orders, gag orders, etc.
— and that doesn’t even begin to cover the knowledge required to understand the related technology and the impact it might have on the users.