I hardly can imagine browsing the Internet without ublock origin or other extensions like cookie autodelete, privacy badger, ublacklist
If I would put all the eggs on a basket, I will prefer Servo.
Me no. And 20 or 30 years some people used to care about that stuff. The same thing could be said about if it's opensource or not.
PD: So yes, I don't have any account now on that site that was called "Twitter".
For the decision itself, I don't see how he should be put in some extreme political camp for that. I think that's probably hard to understand for anyone outside the US / culture wars bubble.
Did I miss a controversy somewhere?