But all my above examples are anything but Simple 2D videos aren't they? I mean, I can't possibly present a better use case, and proof, than homestarrunner.
You're being melodramatic. There is nothing stopping the Brothers Chaps from using Flash to do their animations forever. If you're bent on watching them, Chrome ships with a PPAPI Flash player, which is updated whenever the browser is updated (so about every 20 minutes haha), or there are gobs of offline open- and closed-source players available.
The world doesn't owe you vector-based cartoons on the Internet. Adobe has no obligation to continue the development of a platform that has, irrespective of what Apple and Google do, been in decline since the late 00's.
Flash was never "killed off" by anybody, it died of its own accord because HTML5 replaced the functionality that most of Macromedia/Adobe's customers used it for.
Your cartoons are collateral damage, and I'm not saying that doesn't suck, but jesus christ, perspective.