I've deleted all Mozilla software on my devices. Used to run Firefox everywhere. For now trying to live with the mixture of Safari (iOS, MacOS) and the DDG browser (Android).
No replacement for Pocket so far, but also not sure if I really need one.
They do add a lot of extra privacy protections, which includes disabling some of the engine functionality. And btw many of the bad Google stuff is in chrome, but not in chromium. So having chromium is not necessarily that bad by itself. Brave is also chromium under the hood.
Instapaper[1] and Wallabag[2] would be the two main alternatives to Pocket, I think. Wallabag is self-hosting although I believe there are hosted services around as well.
Cannot get either of them to integrate with my Kobo ereader like Pocket does, though. :-(
No replacement for Pocket so far, but also not sure if I really need one.