"Right now, since ADCs are really fucking strong, Champions that either hard counter ADCs or support them very well, are strong as well."
So that includes any champion with cc, every support, every tank, and every assassin. Other than a few mages, "Champions that either hard counter ADCs or support them very well, are strong as well" is a REALLY broad statement. The game has always been centered around team support to the adc/whoever the carry is. Gameplay hasn't changed, just the champions who fit that role best have changed.
ALSO
Armour items may actually need a nerf, because adc's no longer have access to the old last whisper. The new ones don't compare anywhere near to the old one when the tank is stacking armour, and is why the top 5 winrates this patch are all armour tanks (malphite, rammus, etc.). The game is much more balanced than you think, just read the descriptions of things.