sooooo when are they nerfing garen?

Probably never (unless the meta shifts to favor him). He's 1 dimensional and predictable. Also one of the easiest champions to kite if you have anything for it. Sure, an immobile carry that isn't Ashe is going to struggle to kite him, but then if the enemy Garen is charging your ADC it must be mid-game or later so there should also be allies helping to peel.

Garen's game is literally hide in brush, charge out, land a couple autos, spin to win, run away, repeat. You know what he's going to do.

When they made the juggernaut changes to him.