One problem is that most of the usual deffogers lost defog, we have more than enough counters to gholdengo, what we need and we dont have are counters to gholdengo that can also defog/spin, none of the genies have defog anymore, Gren is too frail to take shit, Heatran is a good counter untill gholdengo starts using focus blast againRegardless of the banworthiness of Gholdengo right now, which I do not support since I consider it extremely good obviously but not broken at all, I'm 100% sure that once Home gets released Gholdengo will definitely become way easier to check and work around. Mons like Lando-T, Tornadus-T, Gren and Heatran have always seen widespread usage in OU, and are all incredibly good answers to Gholdengo:
Lando-T obviously outspeeds it and threatens it with an EQ or a Stone Edge if it Teras into a Flying type, and it's also bulky enough to tank a Make it Rain or a couple of Shadow Balls;
Tornadus-T will be crazy good with an AV and thanks to Regen it will be able to always switch in and check Gholdengo (unless it happens to be Specs Thunderbolt), and can threaten it back with an Heat Wave or a Knock Off (if it gets it back);
Greninja resists both of its STABS and could OHKO it with a Life Orb powered Dark Pulse or a Specs set;
Heatran is bulky enough to take multiple Shadow Balls without a problem, it resists Make It Rain and can completely destroy Gholdengo with any Fire move.
Other mons that could be very good against it are Moltres-G, Ursaluna, Typhlosion-H, Samurott-H and Arcanine-H, all of which outspeed it with the exception of Ursaluna and can easily 2HKO it, if not OHKO it.
why is this distintion important? because it doenst matter if you can counter gholdengo because your defogger wont be able to take of hazards, and youll take DoA unless you equip boots, but then your just one knock off away
With this in mind, Hisuian Decidueye is gonna be THE hardest gholdengo counter in the game, and as long as gholdengo remains a threat, Decidueye-H will have a niche, which it makes me angry because this interfiers with my plans to promote to S+ on the viability rankings