@Viss just gave a glance on telemetry on both Librewolf and Firefox.
There are turned on sub options on Librewolf... but there are so many more stuff in normal firefox and some really specific identifiers that as casual user I like.... wtf?
I now worried about my old laptop with win7 and old mozilla if they done this bullshit on Firefox Extended Support Release (ESR) where you can't turn on ai so easily.