HMGs are also a force multiplier, due to DPS.
I don't build HMGs to "multiply my force". You're better off getting another Guard Rifle with SMG upgrade or a Sniper. Especially maxim HMGs are simply not useful when its "just about DPS", they require too much micro and aren't flexible enough so in the end they deal less effective DPS than other units from all the repositioning and pressing the retreat button.
Add that to the fact that the entire german army is equipped to gracefully deal with maxims, bundle nades, gren nade from the edge of the maxim's attack range, FLHTs, scout cars...
The same is true for the german HMG but the wider arc obviously helps to actually get that damage on the target. Still, I don't build MG42's just so they can rape infantry, I use them to deny space and stall advances. If I want to deal damage I equip a Gren with an LMG or use a Pgren.
That is why HMGs that don't supress are useless. Just like tanks that can't kill other tanks.