I think Adobe is nuts to be so hostile to its Linux users. Surely it can't be that expensive to continue developing the old plugin? The thing Flash had going for it was its ubiquity: it worked on all (desktop) browser. Now that that's gone, this will be another good reason not to have new projects depend on Flash.
Adobe has always been this hostile to Linux users. It hasn't seemed to had much of a dent in their success.
Meanwhile, Flash is dead, it just hasn't stopped kicking yet. It's been a long decade, but many people will be cheering it and kicking the corpse when it finally shuffles off to the great /dev/null in the sky.