Besides the performance and general UX for Flash on mobile, there's the pretty common pattern of its UX being a dumpster fire on the desktop [0] as well. For e

Besides the performance and general UX for Flash on mobile, there's the pretty common pattern of its UX being a dumpster fire on the desktop [0] as well. For every good use of Flash on web pages there were dozens of UX abortions. Flash sites were rife with mystery meat UIs. They were also accessibility hostile. While you can commit a lot of the same sins on a web page you have to go out of your way to do so. Besides all of those problems it was also a closed platform like the GP was decrying with Apple's App Store. You can make a web app entirely FOSS with entirely FOSS tools and served from a completely FOSS stack. If you want to avoid any platform lock in it's entirely possible. Flash was the literal opposite until years after it's mobile availability was a meaningful concern. [0] https://www.nngroup.com/articles/flash-99-percent-bad/ https://www.nngroup.com/articles/flash-99-percent-bad/