^ this is the single most important point to make here. The design issues with Flash were not the reason it was abandoned. It was abandoned because it was not a browser standard, and Apple decided not to support it with iOS. The idea of rich, interactive content that lies beyond the scope of html is still a great idea, even if the some of the results were kinda crazy.
I loved Flash for those things. However, a majority of my interactions were websites for things like restaurants where I couldn't copy/paste basic things like the address, didn't have progressive loading, search, bookmarks, scrolling and the performance was abysmal. Flash could technically do all of those things, but never happened in practice.
html5 was supposed to bring all the cool things Flash had without most of the annoying things I mentioned above. I saw some cool tech demos years ago, but for whatever reason (lack of good artist tools?) I haven't really seen much in years.
Then you need to have a better look into Adobe shops.
As part of the pro-Flash crowd I am happy that Animate is not the only option, we have Blazor, Unity, Qt and plenty of other stuff in the process of taking advantage of WebAssembly, WebGL and eventually WebGPU.
