This. While there are still plenty of folks left that are quite infatuated with their perceived knowlegde and understanding of the game, most people I'd actually trust with balancing the game have long stopped posting here in this forum. Balance may not be perfect and, in hindsight, some things could have been handled better, but I doubt anyone here (me included) would have done a better job.
Your reasoning is exactly why this game has stopped being fun a long time ago. There is no "qualifications" for balancing a game, since balancing is not only about numbers being even but design choices coming to harmony.
Ofcourse nobody can balance COH2 properly ever again but that's because all the decent original designers are working on COH3. Sure the Balance Team gave the game some longevity it might not have had (and I am thankful for it) but let's not get ahead of ourselves with the praising.
For 5+ years COH2 is all about fixing some stats that cringelarpers here post about. First it was the UKF then the heavy tank meta, then it was the ST, then it was snipers, now it's paths and so on.
I am pretty sure even you can understand that balancing every decision on arbitrary and retarded statistics is not only boring in and of itself, it only leads to a product that's sterile and un-fun.