Earlier quoted context omitted.
Would you rather websites keep using animated GIFs instead? Because I think this is why GIFs are still in active use despite being a terrible format in terms of compression/bandwidth: browsers impose all of these limitations on video, which don't apply to GIFs because they're images.
I want no auto-play video regardless of format. Am I really in the minority?
I think Google added an option to disable all/most autoplaying content in Chrome a couple of years ago. But they quickly backtracked and removed that flag, claiming that it breaks in-browser games or something like that. It's a pretty weak reason for me, I don't care about in-browser games, I just want to read a news article without some irrelevant video popup distracting me, plus blasting audio.