The problem with onmitting the social aspect of your education and concentrating purely on excelling academically is that social relations are a part of life and modern society. One of the most important ones in fact.
Most jobs these days rely on teamwork and communication and its no diffrent in the sciences.
If you want to lead a lab, for example, you have to learn how to communicate with people, be firm, yet diplomatic and not anger them. You don't have to like them or their hobbies or whatever they do, but you do have to learn how to deal with all kinds of diffrent people.
A superb way to do that is to become frinds with all sorts of people. Of course you should not feel the need to be someone other than yourself when you are around them, thats why people are friends with people they are comfortable being around for the most part.
You talk about social circles an herachy. Maybe my experiences are vastly diffrent from yours, but to me, socializing and making friends has never been about that. Sometimes you just click with someone and have fun toghether. It's that simple. Don't do anything you feel uncomfortable with.
If you don't like going out partiyng, then don't. Doesn't mean you can't be friends with someone who enjoys it as long as you two respect each others opinions and boundaries, it's fine. No need to please people. Just give to people what you demand from them. If you respect someone, they have a chance to respect you back.
And I'm sure there's someone at your school that would love to watch movies and play videogames with you and have a blast.
Also you say you're blunt with people. No problem with that on it's own and some people need some bluntness once in a while, but in some situations you'll get way further, by not antagonizing the other person but by being diplomatic and always leaving the channel of communication open. A good way to practice that is to have people you care enough about that you don't want to hurt them. Again, friends.
If you don't want anything to with all that and prefer to be on your own, that's fine too. Just be aware that there is learning expieriences and skillsets you're missing out on that can make your life much easier down the line.