so if i understand it correct its totally fine that vet gren while beeing supressed without cover and maxim shooting at him for the whole duration of the fight is able to kill it just by crawling into it? couse as far as ive noticed maxim NEVER completelly pinned a gren squad even it would shoot for few minutes. and your saying that tanks gonna do enough damage against infantry would mean that after mid game i should just suicide this unit couse it holds absolutelly no value to late game, on top of it i will free my suply and i cant build tanks that actually do something, why not just add "delete unit" button couse acording to your logic theres stronger units late game and its totally fine that its useless after grens get vet
I didn't say they were useless. MGs are extremely powerful lategame for their suppression potential. It also may have been a bug if units were never pinned, because I've always pinned units at close range. An MG is going to beat a single Gren squad if its suppressed, if the Grens don't use Rifle Grenade or have a way of breaking suppression.
Suppression is incredibly important for keeping tanks alive lategame and holding territory, since an MG in a building (such as by the right VP on Moscow) can completely deny any capping potential. They shouldn't be relied on for damage, however. Suppressed units are easier to hit with tank shots or grenades and forces the units to stay relatively still, allowing you to move up infantry into close range (Conscripts, Shock Troops, Flame Engineers) and take them out easily without many casualties.
HMGs are support units, not units that can take on the world by themselves. The MG42 is better than the Maxim in terms of damage output and suppression, but the Maxim can still fulfill its role as a support anti-infantry unit (not for its damage, but for reducing infantry damage and mobility).