Unfortunately, this extension is no longer available from AMO. https://github.com/zerodytrash/Simple-YouTube-Age-Restriction-Bypass#installation It is a bit more convoluted now and requires a Userscript Manager such as Tampermonkey or Violentmonkey, but it does work.
to be expected. Mozilla preserves rights from third party, and it hitted a lot of extensions in the past.
Yes, Bypass Paywalls Clean being another fairly recent victim. https://www.ghacks.net/2023/04/20/m...alls-clean-extension-from-its-add-repository/
