When your SMG is shooting 120 meters without issue on a 200 meter map, then the rifle isn't at as much of an advantage as they once were in RO1 where the smg was limited to perhaps 50 meters.
I could never kill an enemy with 1 burst from my PPSH in RO:OST even from 10 meters away. Recoil was so ridiculous that after 2 bullets I was aiming at the sky
Anyway, I thought I agreed with the OP, but I'm always on the side of realism, and people are saying that automatic guns were quite abundant in Stalingrad due to soldiers picking them of the dead. If they are correct, then I think it is fine as it is.
And when they unveil the larger maps, bolt action rifles will become immensely more useful. Though I think the MP-40 does need a little more recoil.