I agree but you don't have go socialize with everyone, only with the people who are important.
90% of the people you will try to socialize are waste of time. Most rich people don't socialize with anyone or try to be a social Animal, they only do it with the people with whom it's important.
I only talked about the skill. Obviously, getting along with your cleaning lady or post officer won't get you far. And I can only speak about me, but I choose carefully with whom I spend my time.