But you never know what coverage move it uses... so you need several different checks to one Pokemon which is centralizing. What Rocky Helmet user wants to eat an Ice Beam? Lando-T, Garchomp, Mandibuzz, etc. don't. Jut because something isn't "immortal" doesn't mean it should stay. It helps that it is revealed, but Douse Drive removes potential checks to Genesect whether it is revealed or not.