Any other contract in everyday life would be invalid under these terms; consent must be affirmative and informed. “I have read and accept the terms” is a crude lie that should be illegal but is tolerated for convenience, and which allows to justify all kinds of abuses.

The mozilla case is even worse, because they’ve even bragged about how they respect affirmative consent by asking their users if they allow telemetry (they’ve never really fully complied), and about being respectful of privacy in general. They deserve to be criticized for it, and that’s what people are doing here, but your responses of “if you don’t like it go away, the competition is worse”, is typical corporate ass-kissing and only legitimizes bad behavior.