Why are you complaining about unpaid volunteers doing their best to create a privacy-focused fork? Read their FAQ first: Why don’t you accept donations?.
And also: no donations means no expectations. This means that people working on LibreWolf are free to move on to other projects whenever they want.
You’re not entitled to the features you demand. If you want it, then work on it.
There is probably a disable flag available for this, because so far, I’ve not seen this in v129.