I don’t believe anyone really thinks the GoD is overpowered. It does however have a small problem, a lot of its power comes from using Devouring Arrow rune which makes all other Hungering Arrow runes and also other skills nonideal choices. When people talk about nerfing GoD, they actually mean more of “a power shift”.
Check this:
Cutting down the effectiveness of Devouring Arrow and buffing the set itself would shift the power to more balanced state, making other GoD variations more viable.