The Google payments were never guaranteed for Mozilla. If they didn't have a backup plan in place to reduce spending, that's on them. Let Mozilla return to its garage opensource roots.
It will be either of those two.
The effort required to circumvent the restrictions will get increasingly higher.
As someone fittingly said a few days ago.
Let the 1984 commence.
Personally I feel like I'm too addicted to Youtube (and Reddit, which is what brought me back here), so if I can't block ads, perhaps I'll be able to quit. To be honest though, even just disabling watch history and reducing subscriptions makes a massive difference to how addictive it is.