Yeah you read that here. It’s not true, the majority of wear occurs during warmup as the engine and the oil warm up and some additives activate.seems like I read somewhere that the majority of engine wear occurs at start up is why the lower (0w) viscosity, pertaining to the start/stop function on newer cars and of course cold starts, instant fluid pumpability is why, and the cafe and related U.S.. gov. standards combined. the protection is achieved by the great work the formulators of the modern oils and the engine manufacture.
A better winter rating facilitates cranking and pumpability. It does not reduce wear. Pumpability is a binary in this instance, either it is pumped or it is not due to the possibility of shear gelling in the vicinity of the pump pickup. It’s not “better” or “worse”, if it can be pumped it will.