Heh, you haven't been here long, eh? Since OKW came out, players have been hating on Shreks on Volks. There were less threads for it when they got their Vet bonuses nerfed hard about half a year ago, but the hate for Shreks on cheap mainline infantry has ALWAYS been around. I hate it, because it is the boring, only decent play for OKW. Every strat discussion for OKW starts with: "Build 3-4 Volk squads and when first vehicle shows up, get Shreks".
Well no, I wasn't around back then. But I remember playing with Obers that came with a LMG34 stock and pre-nerf Luchs and FlakHT. Since OKW doesn't really have a snare, I never thought having a single 90 munitions Schreck on a mediocre yet cheap squad was a problem, especially since the Raketens has a very limited range. Oh well.
As I said in another thread, OKW lacks non-doctrinal mid tier infantry, like PGrens or the Captain squad where you could place the Schreck. They also shouldn't become Ostheer v2.
As of now, the vehicles seem to be a problem here, not the Volks, Schreck or not.