(un)fortunately yes, it was made to balance the game even if it was a bit too weak, they could have done it bettee If you played the older fallouts you would understand the terror of seeing a supermutant pulling a minugun out of his ass, aware that you and your companions would get obliterated in barely a couple turns
Yeah the mini gun in the old games were terrifying, watching a mutant 2 hexes away whip out one was basically a death guarantee, meanwhile you can barely kill a glowing one with standard ammo in the modern games