Extensions are third party apps and most, if not all, of them are not made by Mozilla. If an unofficial, third party plugin doesn’t work, it’s not up to Firefox to fix that. The issue is with the third party apps.
FF is allowed to change their software, and they’re not at fault if those changes break existing plugins that they had no hand in creating. That’s not how software works.
Extensions are third party apps and most, if not all, of them are not made by Mozilla. If an unofficial, third party plugin doesn’t work, it’s not up to Firefox to fix that. The issue is with the third party apps.
FF is allowed to change their software, and they’re not at fault if those changes break existing plugins that they had no hand in creating. That’s not how software works.