I’m fairly sure you’ll be able to avoid accepting the “terms of use” just as you can avoid all the other usual Firefox bullshit — telemetry, pocket, A/B testing, sponsored links, ad attribution, and so on — by messing around with the configuration in one way or another.

Switching to one of the forks for me is just a statement that I don’t trust Mozilla any more and want to put a little more distance between me and them, not really of immediate practical benefit. It’s also only a temporary respite, at the rate things are going Mozilla might not exist at all in a few years. Hopefully Servo will be ready by then.