Goblin having 7 AC and 12hp makes it still fodder for any half baked party, of alcoholic, half blind, one legged dorfs that come bumbling through.
The problem is that just smashing a goblin with a hammer is not the only option in this game. For that you are right it doesn't really matter whether the goblin has 6 or 12 HP. But for spells like "Sleep" it does! And for tons of other stuff too that was carefully balanced in DnD 5e. More and more balancing issues that Larian has to fix with every new addition and deviation they make.
