phantom
Banned deucer.
To add on: unaware users are commonplace on stall nowadays and Slurpuff can't break through those at all. So it's effectively useless versus those teams, unless you're able to lure the Unaware mon somehow. There's also the fact that Pokemon like Bronzong, Escavalier, and Doublade are fairly strong checks to it on other teams and stop it even if it sets up. It's also more feasible to revenge kill Slurpuff this gen with Sand Rush Stoutland and Chlorophyll Venusaur, and of course, if you're not stall, the best way to stop Slurpuff is to not let it set up, which is pretty easy for offensive teams in current RU. So to put it simply: it's very unlikely that Slurpuff will get banned this gen and if anything, it kind of struggles a lot in in the current meta.