I agree fully. We need to keep the idea of fully branching off from an open source project alive. But I also suspect that Google has incentives to make it extra

I agree fully. We need to keep the idea of fully branching off from an open source project alive. But I also suspect that Google has incentives to make it extra complicated and difficult to maintain a fork of their codebase with adblocking implemented on top of it, over time. Resources are often very limited in open source and often comes down to one or a few people.