you can counter the entire field by just abusing it yourself with moves like hypnosis and other buffed moves you dont have to have the ability to remove the field to counter it and yes not everyone will be prepared for the battle on their first try but this mode is called intense for a reason you arent supposed to just steamroll everything otherwise what would be the point of a hard mode you can have a different approach by changing around your evs and seeing how you can adapt instead of only relying on removing the opponents field