Librewolf is a hardened fork, not a general use replacement for Firefox. It’s up to you which one would better fit your needs.

Yep. It doesn’t even have auto updates so unless you actively use a package manager, people are likely going to miss security updates anyway.

I don’t think it’s meant to be a mass adoption browser. It fills a niche and it fills it pretty well.

I just cancelled mlb.tv today before the new season renewal activated because I’m exhausted with trying to doge blackouts. I’ll just do something else with my time.