I am wondering since YouTube no longer uses Flash Player why are there 645 responses for search term “Flash” in the addon search engine? At least the ones for YouTube Flash Player should be removed!
Some websites still use Flash, so many add-ons may still be useful. Also, a number of add-ons were named using “Flash” back when Flash was used on YouTube. They might still work on YouTube, but they just don’t use Flash anymore and don’t want to be renamed.