By the looks of it, many US government websites haven't had a significant technical update for at least a decade. Searching for '"best viewed * internet explorer" site:*.gov' turns up a depressingly large number of results, many of them for important-looking services rather than old static pages.
It's the difference between building a product to spec and building a product so it's usable by the actual demographic that needs to use it. US Digital Service talked about finding these Flash barriers and building quick webform replacements making a HUGE improvement in usability (like from ~5% completion to 90%+ completion IIRC).
I wouldn't be surprised if those same government departments are stuck on WinXP SP2 with IE6-8 with Flash enabled. IT at huge orgs moves extremely slowly.
Last decade or so? Chrome still supports Flash, you just need to enable it on a per-site basis. And it's been less than two years since they enabled it by default.
How do you make Flash files in 2018? I don't see export as Flash in any of the programs I use, I am sure other programs have them though. Maybe the option needs to be purged from the toolchain as well as the browser.
