Many privacy preferences enabled by default.

Librewolf is always built on the latest version of Firefox, so it always has the latest (security) updates that Firefox has.

Have the feeling that Google is getting a bit too much like that very, VERY big person sitting next to you on the plane? And you wander through your settings in Firefox and see a lot of Google in there? Want to remove that Google and Amazon search entries that Mozilla doesn't allow you to remove? Even if you know how to edit a mozlz4?
Well, here is your solution: Firefox as Mozilla should have made it.

For the large community of *buntu people out there, using Firefox now comes with the "no compromise" obligation to use snap. You want to install Firefox? Snap is installed without your consent. Librewolf, next to all its other improvement of Firefox like no telemetry, privacy as 1st priority, no "interesting" add-ons that are there, not by users choice, but just there (without possibility to remove/ alter) because Mozilla wants you to, Librewolf gives an alternative how and what you want to install on your computer. So if you, as a *buntu user like your software to come through apt and/ or a ppa: here is your Firefox solution, without the need to loose "those last updates" as with some others (e.g. Firefox ESR).