Earlier quoted context omitted.
Yes, it's CLEAR you are not a lawyer. They consented when they signed up. Read the terms. They have NO liability.
I'm not a lawyer of course, but I don't think it's as simple as saying you signed it. You could give up your right to any form of holidays or accept to offer your first born in case of default on a contract but those clauses would be unenforceable when presented to a judge.
What exactly do you think a signature on a contract means?
It's a serious question. In you layman's view, what do you THINK signing something means?