[commoner]

Fennec F-Droid does have the same extension whitelist by default, but it also supports the Collections workaround that adds access to all add-ons on addons.mozilla.org:

https://blog.mozilla.org/addons/2020/09/29/expanded-extensio...

Since Firefox Nightly is unstable, some users prefer to use Firefox forks like Fennec F-Droid and Mull that are based on the stable release channel, yet also offer expanded add-on support.

[capitainenemo]

Regrettably collections that try to enable everything are cut off at 25 or 50 in Firefox, so it's still not a practical way to recover your disabled addons unless you register with a custom collection.

Unless someone out there made an anonymous collection autogenerator. That'd be nice.