The extension ecosystem that Google has been locking down? You can get the same UBlock extension on Safari and Chrome now (on Safari desktop and iOS).

Good thing I mentioned Firefox. Ublock on safari and iOS is not the same.

Yes, it's not the same as the one available still on Firefox. But you said "I’d like the extension ecosystem from chrome or Firefox". I'm pointing out that the Chrome one has been limited and now runs the same UBlock version that Safari runs.

Good thing I mentioned Firefox

I find the “use reader automatically “ setting helps a lot