Ah ok! We'll be sure to drop looping support from Animated GIFs too, because that's also non-standard[0] and is just an extension Netscape 2.0 slapped on there.

I regret to inform you the vast majority of the web is just Shit People Tried and that became popular enough for everyone else to support, with lots of hacks to make things interoperate better.

[0]: https://en.wikipedia.org/wiki/GIF#Animated_GIF