Remember those year 2000 web sites that were created in flash and did not come up with any menu structure without flash enabled or worse, where you had to watch an animation before getting to the point.
I see a repetition of that terrible annoyance in those current web sites the are so eager to present some kind of flat overlay that won't ever go away (give your data to social media button NOW function or simply the website menu that keeps visible when scrolling thus wasting my vintage N900 browsing experience)

Designers of those web sites should be forced to watch the flash websites during their education. So don't bury flash yet, put in museum and use for educational purpose (offline)