Ah, that explains it! Thanks JRViejo Tempted to try the beta out then. Haven't messed with Firefox betas in a while.
Even if HTML5 is not defaulted in Firefox and its forks it'll be switched to using it if Flash isn't installed/activated. I don't see the big deal about it personally. 60fps is overrated. 4k is overrated. Only condition where 60fps would make a matter is in gaming footages, but even @30fps most of them are still fine to watch IMO.
Youtube Ditches Flash, and it Hardly Matters: Meet the New Boss, Same as the Old Boss https://www.eff.org/deeplinks/2015/01/new-drm-boss-same-old-boss That's a good point.
Good gawd we can't run from our Adobe-destiny?! This is imperialism! I'll pick the limited video resolution choices over having to touch Adobe's Flash Player again. If they ever disallowed me to watch anything without using the crap they define, I have ways to go around it.