Personally I think a large part in this is the Allies not adjusting their build orders yet (which is to be expected, it's only been just over a week). Not having a Pak is most certainly a drawback, just one that hasn't been exploited very well yet.
Soviets still seem to almost always go for their trusted T-70, but that build order plays right into the hands of the (Assgrens into) Panzerschrecks into Ostwind. If Soviets got the M5 quad instead, it'd hardcounter the Schrecks pretty well while leaving more fuel to get an SU-76 or T-34 to help counter the Ostwind.
Every Allied faction has access to a mobile suppression half track now, they just have to start using them to counter the Schrecks. Players should be given time to figure out natural counters for the stuff that is strong but not blatantly broken, and if after some weeks it turns out the T2 skipping is too strong regardless we can have a look at artificially restricting it (in which case I'd prefer to just make both T2 building or BP2 a requirement for Schrecks).
It doesn't really matter to me how powerful the T2 skip is in absolute terms. What does matter is how much more powerful it is than
building T2.
Making Panzershrecks available regardless has turned T2 into a side tech: you can get away with not building it pretty easily now.
The idea of side tech is it gives you an immediate benefit: you get powerful tools now (light vehicles) at the cost of delaying more powerful tools later (tanks).
This doesn't work with T2 because of the 200 MP cost for the building. That puts a T2 skipping strategy 200 MP up over a T2 building strategy, balancing out the benefit of T2's units. And if that sidetech isn't giving you an immediate advantage, what's the point of it? You're delaying your tech for nothing.
That's why I'd like to see the Panzershrecks locked behind T2 anyway: it's necessary to restore the
internal balance of Ostheer.