It's not about the feasibility itself, it's about the precedent that was set. Can you look in the eye someone and forbid them from doing something that you just did? It makes zero sense.

> no casualties

40 people died

> Moreover these countries already hate US, so shouldn’t they logically hate the US actions as well?

It doesn't matter if they hate the US or not. That is not the point. The point is that it makes this sort of actions completely legitimate.