OKW isn't late game ammo starved, but that hardly matters when the entire rest of the game your disparately hoping you get more shreks out. And I was talking about Ostheer by the way.
Don't send LMG Para's to be attack KT's? The issue with Pgrens is that they are meant to be good mobile anti-tank, but the suck ass against tanks, that aren't tank destroyers.
And PZGrenadiers are not meant to counter HE Shermans that are completely undistracted, loaded with HE, ready to blast those grenadiers away! Saying they should kill those Shermans (the 1 hit kill all the time is complete nonsense btw) is like saying an AT gun should kill a Luchs if the Luchs is behind it; no, it should be creamed.
Nobody cares if you pay 120 munitions or 200 or 500, the unit does what it does. Axis already has enough pay more to get far more units like the King Tiger who always kill more than what they are worth with minimal micro. Why do you want to charge anti-infantry vehicles headfirst (yes the Sherman is one, there is no truly dedicated anti-infantry vehicle in the game, and that would be silly anyway) using infantry, and expect to win? No you should be creamed and be ridiculed for how terrible your choice was.
The proper way to use these Panzergrenadiers is on the defensive; cover your AT guns with them, use Ambush Camoflauge if you can, or charge at the enemy tinpot tanks when they are distracted and annihilate them anyway. You want to charge headfirst and kill the enemy with no distraction and minimal losses in a blob, and then you get upset when I call you out on it.
Panzergrenadiers are absolutely fine, stop hijacking the thread and talk about how it is unfairly good against USF, which is the case with their tinpot vehicles and zero room for error. If it were up to me Panzerschrecks would be a doctrinal unlock: They aren't integral for faction design at all and are better than all the stuff that take CPs like G43, Conscript PTRS, AT Grenade Assault at their role. Probably could list more but you get the gist.
And if you really, really must complain about Panzergrenadiers, make a seperate thread talking about how they are bad anti-infantry, which they are.