Honestly I think the real issues with pg oddly enough are a combination of rifle nades + g43 + assault grenadiers.
1. Rifle nade.
In vcoh grenadiers did not have a rifle nade. So this meant to assault you needed mortor smoke + pg or flame pios. It was a standard tactic. In coh2 the rifle nade is a cheap and safe way to kill at guns and weapon support teams. So a lot of players expect the pg to be a way more powerfull option because of tier and cost. No need for tactics now, you just click a button with grenadiers.
2. G43
Ost players now have another medium/ cq unit for a cheaper price and no teching. Doctrine specific but available in many of the p2w commanders. Again another issue of players thinking pg should perform better than grenadiers because teching and cost.
3. Assault grenadiers
Yet again another option for ost players in cq combat. Cheap and tier zero no need for pg when combined with grenadiers.
The issue of pg effectiveness is more complicated than just buffing them. It s easy to just cry and stamp your feet in the forums but you have to look at a much broader picture here.
1.loads of bullshit. grens where the most cost effective unit as soon as they reached vet 2 in vcoh and could kill any rifle or tommy squad easily in cover. grens could also attack a 30 call head on with their longer ranged grenades and the fact that kars where not as susceptible to suppression
2. Its a all rounder upgrade that most importantly upgrades the medium and long range power of the grens
3. have you ever compared them with shock troopers? the same shock troopers that nearly have twice the durability nearly the same dps and smoke grenades and are cheaper to reinforce?
Whole picture my ass your only looking at half the picture.