Not uncommon for these kind of giant step backwards in the world of computing.
I was in a plane the other day sitting next to an elderly gentleman who saw me using Apple products. He then proceeded to tell me how he's been on mac since 1984, and absolutely loved Apple products before, but now he's stuck on OS X 10.6 because it's the last version that supports AppleWorks, a tool he's been using for over 20 years. No currently supported tool gives him the flexibility and power he had with Apple Works - embedding multiple documents of different types (spreadsheet, word processing, etc) within one another, not to mention the thousands of AppleWorks documents he's accumulated over the years. However, most websites and new products don't work on 10.6, so he has another modern computer just for browsing the web. (George R R Martin similarly has an old computer sitting around just to use his favorite 20 year old word processor of choice)
Flash is similar - I have animator friends who maintain an old copy of Windows XP because they love Flash's interface and no other tool comes close.
The news yesterday about MSPaint potentially going away (I think MS back pedaled on it?) falls in the same category - powerful tools that pretty much can't be improved upon that get randomly EoL'd.
Another thing that happens pretty often - tools randomly losing functionality in an update because the developer felt that it should be removed for whatever reason.
Maybe there would be a niche for a minimal Linux distro that comes with a set of powerful, minimalistic creation tools (office documents, multimedia manipulation + viewing, etc - whatever covers the computing needs of 90% of the population) that gets updated with security updates etc but has 1) backwards compatibility and 2) a user interface that mostly never changes as primary goals.