Unlike what you claim, it's actually possible to win engagements and come out ahead MP-wise as every faction. What you are claiming is that in every situation, USF loses mp-wise, which is utter bs. Not to mention the fact that countless posters have already pointed out Riflemen's superior veterancy and scaling make up for the early game weakness with cost-efficient trading in the mid and late game. We are almost the same rank as USF, so it's not even possible to justify your incredibly biased and lopsided view.
USF's weak early game is definitely something to be looked at, but not through spreading outright lies like the way you're doing. The worst thing is that we actually agree that USF has a weak early game and that the sandbag issue is a problem.
USF is weak all stage of the game ATM IMO. Here is why, riflemen don't out scale axis infantry. Vet 3 and vet 5 volks is much durable and has more utility than riflemen. They gain vet much faster than the riflemen too, since they can engage at long range and retreat when less favorable matchups. It is often the case volks KDA is better than RM. And for some reason one Panzerfaust gives you insane amount of xp. Not to mention OKW can make ober which dominate riflemen.
USF naturally does not have a late game infantry units like the ober, you have to preserve the riflemen and its vet. 20mins into the game, a fresh RM squad it is even harder for them to kill units and gain vets. On the other hand axis still can stay at max range get model drops,and gain vets since RM vet3 at long range really doesn't do dps.
So a faction suppose to have the strongest infantry lose infantry fight all stage of the game? huh?
Someone of you might say ranger and paratroopers. Lucs, flame half-track, 222 and puma with smoke meta makes easy manpower bleed.
USF has light vehicles too, but it is also naturally at disadvantage. USF AA halftrack vs OKW AA, OKW has an at gun that doesn't require tech. One puma outclasses all USF light vehicles.
Really unless you out skill your opponent, USF hard to play.
Most people build WC truck nowadays to gain the advantage early.
I really miss the old coh meta, where allies win the early game with infantry, and mid game could go either way. Late game axis can make comebacks with their heavy tank on little vps they have left.