On the other hand, it can achieve the exact same thing for people who belong to an irl community that insists on being wrong, allowing them to find better information and a group to validate it. That’s certainly the vision people had of the internet back in the 90s. Too bad it hasn’t been anywhere near as ubiquitously a force of fact-checking as they envisioned back then, but I’d be willing to bet it’s been a stronger positive force than negative.
That might be because they actually aren’t binding in many cases. Courts have held that if the contract can’t be reasonably expected to be read or understood by the people it “binds,” it’s not really enforceable, and 99% of EULAs are ridiculously long and legalese-heavy. But that doesn’t change the fact companies can and will treat them as such until challenged in court, and they’ll almost always be allowed to refuse service to pretty much whoever they want.
So you’d be right here; grandma’s post about not giving Facebook the right to her data is meaningless. Don’t want Facebook to have your data? Don’t use Facebook!