LibreWolf is indeed based on the hardened Firefox arkenfox user.js so you get its benefits which means a privacy-focused browser but Librewolf also comes with more settings pre-adjusted, telemetry removed, useless features removed....
I've played with Firefox settings for years before Librewolf was created and it saves me so much time, ensure my browser stays up to date and functional, and is able to perform fingerprints test way better than any other many web browsers I've tried.
Quite recently I moved to my first trackball (Elecom Deft Pro) and that was a life changer. I've shared my experience here.