Well said, and I completely agree.

Since Flash was an animation-first piece of software that still had a fairly robust scripting system, it was able to create very unique and interesting pieces of media that can kind of only exist as they are.

People aren't making full on TV cartoons in Construct or GameMaker. This isn't a dig at those tools, they're good software, but the animation parts of them are targeted much more towards "animation for games".