I agree, but look at electron apps, the situation is not better, Flash is similar to a game engine so it had a "game loop" running at a certain FPS. I coded AIR apps, and I know Flash was misused in websites but we have same misuse now with JS where sites with text and images don't work without JS, You had the option to turn off Flash but can you afford to turn off JS>
Adobe is at fault, they should have open source it or make improvements/