Its true that MG placements are easily countered by Molotov and Oorah but my point is to get the initiative on an early encounter forcing them to retreat. If you can micro your units well the MG should not be in danger unless they flank you but at that point you would have another Gren + whatever out and the map should be advantageous to you or at least a stalemate (which is good early game as ostheer).
I'm also a fan of the med bunker HQ setup

.