We've had this all the time since the 90's with Flash being required, only we couldn't tell because it was duct-taped onto all major browsers all that time.
Turn off Flash and see how many sites require it (because of bad codec choice / lack of alternative ways of viewing embedded videos, because of crappy ads without fallback images so you get popups/warnings about missing plugins etc.).
Turn off Flash and see how many sites require it (because of bad codec choice / lack of alternative ways of viewing embedded videos, because of crappy ads without fallback images so you get popups/warnings about missing plugins etc.).