Wobbuffet still easily traps and deletes any single mon out, so definitely not, and its not worth to unban the ability just to have Wynaut roaming free on lower tiers anyway; even if its a joke mon it still has Encore to bring any Choiced Pokémon to Struggle, or just DBond Sash to pick the easiest kill of its lifeWith the arrival of BDSP OU, there is unsurprisingly a minimal banlist. And among that, there is Shadow Tag, where his presence is in principle indisputable. But since there will probably only be Wobbuffet's family in these games (in any case, this is the current situation), isn't this a good opportunity to test them in OU? Naturally, Woobuffet is far from being something perfectly balanced, with the possibility of trapping most of Choice users or combining Encore with Tickle (cf. this replay with the combination of Pursuit). But the absence of Gothitelle/Gothorita and their PP Stall set simplifies the problem a bit. If it turns out that Wobbuffet remains too bulky and that it succeeds too easily these Counter/Mirror Coat, then it would stay in Uber and Wynaut would become the only chosen one
Not worth unbanning either one at all