Firefox has had it for a while at media.autoplay.enabled. Unfortunately, like this article notes, this arguably breaks web standards and some websites behave po

Firefox has had it for a while at media.autoplay.enabled. Unfortunately, like this article notes, this arguably breaks web standards and some websites behave poorly as a result. YouTube requires you to stop the not-yet-started video and then start it again to get it to play. And Google Play Music just straight up doesn't work. Hopefully Apple publicizing this will cause website devs to support it better, and it can be presented to the user as a legitimate option instead of a hack.