>>41832819Toxapex and Ferro are not even that bad in this gen, many mons can simply break through them. Galar-Corsola is better than both of them to be honest.
Pex is too passive and Ferro's main gimmick are hazards which are less common now due to the timbs, Rapid Spin buffs, there still being a number of Defog users and Excadrill being on every other team. Once Home is out and everyone who lost Defog has it again, I can see Ferro, and to a lesser extent, Pex, dropping in usage a bit as hazards will be less important due to all the removal.
The issue is that if Dynamax gets banned on showdown, they'll become super cancer.