

Their lack of manpower means delayed updates to fix zero days compared to Firefox
From their site:
LibreWolf is always built from the latest Firefox stable source, for up-to-date security and features along with stability.
As soon as firefox pushes a release, for instance to fix a security vulnerability, librewolf can immediately rebuild It is literally just firefox with different setting. Delay between firefox release and librewolf release should be negligible. You can verify this by noting that 136.0 was offered on the same day.
https://codeberg.org/librewolf/source/commit/2b90daeb5aa5a80443f4f7655393f610fb16418a
https://www.mozilla.org/en-US/firefox/136.0/releasenotes/
The difference in time between firefox and librewolf security updates is less than the variance between users updating their machines.
Why should they have any?