their reinforcement and upkeep can easily run the soviet player's manpower dry
Just no.
Only thing that reliable counter shocks well are snipers and flamers HT, and both of them are expensive glass cannon that a single little micro mistake can costs you a game, while the Soviet player just need to click a doctrine, calls shock and right click beside any dudes he wants to kill, with extreme durability, that is totally unfair and not fun to play against.
Back in 2CP era you cannot get that much shocks because Soviet needs to get a crapload of cons (or other stuff) before reaching 2CP, and Ostheer can already dig in with enough units, shocks can't bring that much impact.
But now, they arrived too early and facerape the whole Ostheer T1 before they can bring out counters.