Can the turrets' armor and mr not fully fall off after 14 minutes?

The turrets are so weak once they fall off. Besides me playing as a Nasus doing 1300 damage to the turret in 1 q, the moment the plate falls off the turret is gone in the next 2 minutes. You fixed the turret being strong enough to last more than 10 minutes but imo they still feel like shit.

im b5 so idk maybe im just shit