I like LibreWolf, but I don't like that it wipes cookies and session tokens each time you launch it. I understand why they do it, but it's a consideration outside my threat model, so it just annoys me.
No, because Librewolf also adds fingerprint resisting which is stronger than Firefox's and has ublock origin installed by default. It also has the ability to block stuff like WebGL and JS canvases by default
Also, Librewolf strips out telemetry and allows for some good about:config flags to be used via simple toggles in settings
You can also easily set specific sites' cookies not to be wiped, I use this to have websites I trust to store my data for convenience, but any random tracker-infested blog to forget me as soon as the browser closes!
And also, Mullvad Browser does this by default, as well. I think theirs can't even be configured on a per-site basis.