Regarding LW
Quote from article
I am sorry, but this is just not good enough.
Of course we need to keep our block lists and what not updated, but the problem is that the user isn't provided with a choice. Not all users want these things fetched automatically, sometimes for good reasons (e.g. a temporary failure in a VPN connection that reveals the true IP address - and thereby the location - of the user).
All update features needs to be opt-in only and not something that is enabled by default if Librewolf is to be regarded as truly privacy respecting.
The best solution is still to tweak firefox with Arkenfox user.js because that will not only give you the same privacy as you get with Librewolf, but you also get to disable any automatic outgoing connections and a ton more.
Furthermore, Librewolf is usually behind with security updates - which is not ideal. When you choose to run with a tweaked version of Firefox, you not only get the best privacy, but you also get timely updates.
Unquote
In LW you can enable/disable update add-ons automatically
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And as for late LW updates. Which fork is not behind its updates? LW, UG, Brave, Edge etc?