If underpowered unit gets buff, that doesn't mean perfectly fine unit should get one as well.
Also, OKW have elite infantry without any doctrine plus volks scale as amazing AT infantry. Not to mention OKW starting T0 units, which could carry you all the way to call-ins(if OKW had useful, early ones).
Your argument is not only invalid, but just plain stupid.
Volks are not perfectly fine, otherwise I wouldn't be saying they need an upgrade. 'Amazing AT infantry'... just no. They are very weak and are often getting 2-3 models killed by 1 shot of the armor they are trying to kill. There is no such thing as amazing AT infantry in CoH2, the only thing close to that is Pgrens because they have 2 schreks but then it is only 4 man squad, so quite weak.
What call-ins? Are you suggesting OKW can play like soviets and hold for call-ins? Staying with volksgrenadiers, sturms and kubelwagen is great for 25 mins, just need that Command Panther to finish them off.
T0 -> Call-ins... hmmm. Conscripts spam if anything, or even riflemen.
What volks need is some kind of vet 3/4 and/or T2/T3 requirement that will allow them to upgrade to some better AI weapons, otherwise they scale very badly if there is not much use for panzerschrek. Even with vet they got torn apart by pretty much anything. Their AI DPS for mid-late game is awful considering you will always have at least 2-3 squads of them and if you upgrade with panzerschrek that's only 4 with kar 98ks. Heck even if it's just a doctrinal upgrade like conscript PPSH it will be better than nothing, since pretty much every other standard infantry unit is able to upgrade to better weapons for AI.
The last part is very typical katitof, say something to make it look stupid and wrong when in fact it's actually not (unless of course it's biased for allies). Trying to discredit the other poster without actually saying anything of note besides spewing BS everywhere.