Flash is dying fast. I don't bother installing the old versions that do work because already I get warnings that they do not plan to have any new versions work, so I might as well just get used to the fact that flash is just another walled garden I not only do not want anything to do with but also could not have anything to do with even if I wanted to because its that they don't want me in there not that I wouldn't've continued to grudgingly install their stupid proprietary crap from "network effects" unwashed-masses-pressure if they continued to make it actually work.

TL;DR: Flash is not going to be working on Linux going forward, so no one on Linux is likely to bother installing some long out of date version of a proprietary viewer just to view some adumentary...

Surely there must be some free open source animation system by now?

I would even argue that it is totally inappropriate, even undermining of DeVCoin principles, to be using some non open source crap to make our videos. It is a kind of misrepresentation even maybe, or at the least it implies that we too agree that free open source software is unsuitable for use for real world applications such as educational videos...

FOR SURE WE CANNOT PAY BOUNTY ON IT, RIGHT?

The entire content becomes non free-open-source by being unusable without a proprietary viewer???

-MarkM-