It's been reported[0] that Firefox Nightly has a Debug menu through which one can bless a custom collection of allowed extensions to get around the new Mozilla Nanny State™ but I haven't personally expended the energy to try it

0 = https://www.ghacks.net/2020/10/01/you-can-now-install-any-ad...

You may be looking for iamadamdev/bypass-paywalls-chrome, the chrome repo has the firefox extension as well, fyi.

Darn, it actually works! Thank you a lot for the mention.