I think it's important to not throw babies out with bathwater here.

One can disagree with Mozilla and think advertising sucks, and use tools to block it or FOSS products that don't force it on us, while also seeing how e2ee encryption bans ("chat control") and age verification rules are a restriction of both the rights of service providers and the rights of users.

Another way to put it is, just because a regulation is a restriction of the rights of a service provider does not mean it isn't also a restriction of the rights of a user.

The former does not make the latter true, but in some cases both are true.

I'd also add that if we can't stop bad laws that restrict the rights of (and piss off) both service providers and users , we have no hope of stopping similarly bad laws that only restrict the rights of users.

(Service providers, even small ones if they take the time to speak with their member of Congress, can be very credible, sympathetic, and persuasive stakeholders. When we can fight on the same side--realizing that sometimes we will fight on opposite sides--it's better for user rights that we do so. One of the tragedies of the left and parts of the right in the Trump era is that they see any regulation that hurts Big Tech as a win, even if it also hurts user rights. User rights are safer if we can distinguish between regs that hurt Big Tech and users from regs that don't hurt users.)