1. Maxims have never been op. They're annoying but at the same time easy to deal with.
2. Your whole point doesn't make any sense. OKW has plenty of alternatives to the puma even though it is the best option. (Schreck Volks, Jagdpanzer, Raketen)
3. Panther isn't effective at all.
I get the feeling that you're one of those forum gurus who likes to argue about a game that he doesn't play.
(no offense)
Perhaps i did not get my message clearly through. The message i am trying to convey is that, judging from the player buzz, people feel they are "forced" into certain units because the next best thing is a piece of crap. Not sure if your 3rd point is sarcasm, but lets jsut say, if the Ost players want more infantry flexibility, he or she ahs to get commander-specific units/upgrades. So due to the design of the game, you are pigeonholed into Grenadiers all day.
Sorry if my examples weren't the best
295 fuel is referring to the Panther I assume. That number is incorrect though, as OKW starts with 40 fuel so it's really 255 (40 for T2 or T3 but -40 for starting fuel, 80 for T4, 175 for Panther). Puma is 70 fuel.
Post also disregards the Jagdpanzer, which can come at 135 fuel (40 for T2 but start with 40, 135 for the unit)
I quoted it from a thread on the official forums. you can view it here
http://community.companyofheroes.com/forum/company-of-heroes-2/coh-2-balance-feedback/111505-puma-comes-to-early-in-my-opinion
I find this "crutch" units concept quite interesting. But what units and why, this is a little debatable. For instance, I would agree that Puma can be included in this cathegory, but not with ISU. ISU is not just a heavy AT, it has excellent AI capabilities. Main infantry should be the backbone of an army, so from this point of view I can't consider grenadiers a "crutch" unit. For soviets, you can start with T1 or T2 both starts being viable. So maxim won't be a "crutch" unit in my view eather.
Comming back to Puma, it depends on what enemy does and against what faction you play. If your enemy will go on infantry intensive tactics, you won't need it tbh. But in most situations he will try to build vehicles fast and many because he knows you can't do the same. In this situation yes, Puma is a "crutch" unit.
I apologize for the "not go good" examples. I still think the game could be more. Looking at all the comments about schrecked volks and how good they are is a good example. THey are very effective throughout the game, but the next alternative (that doesn't cost fuel build) is raketen which people say is trash.
I think people maxim spam because cons lack fighting ability. People wouldn't be making so many and annoying players if COns could be a bit better. In this case the maxim is a "crutch" because your core infantry unit performs poorly. Same thing goes with the sniper vs OKW. People complain that there is no other way to deal with the powerful OKW units, so they rely on snipers to keep them in the game.
PLease tell me if you need more clarification. i hope i fleshed out my point a little bit ore