Some more thoughts to play with .....I'm really struggling with this idea of us just accepting people who choose not to develop these skills and then try to push a narrative that society is somehow forcing them to be a way that they aren't and that they should be allowed to violate societal standards simply because it makes them more comfortable.
Well-balanced introverted folks have good social skills - it's not that we refuse to develop them, but we don't make a fetish out of them and choose not to use them as much as extroverted people. There is a big difference between on the one hand fearing company, and on the other hand simply not being bothered by it, or having had enough of it, or having better things to do - life is a lot more than just social interactions.
I find that introverts tend to have deeper, richer relationships with fewer people than very extraverted folks. I saw this very much amongst the scientists and computer people I worked with who were predominantly introverted thinking and intuitive types of one sort or another.
Who is it that is setting the societal standards that you are saying introverts violate? This depends very much on which society you belong to and it isn't the same over the world. My own culture is more introverted than in the USA and there is no sense of stigma attached. I suspect that in some Asian countries introverts predominate and maybe extroversion can even appear maladaptive there.
Both introverts and extroverts can have social difficulties if they are relatively unhealthy. An extrovert who is addicted to socialising and cannot stand to be alone for any length of time is just as much in trouble as an introvert who fears company in a disabling way. This is completely symmetrical, so would that mean that extraversion too is maladaptive? Again, many healthy extroverts socialise because it makes them feel more comfortable than being alone - is that a fault too because it's based on comfort?
In days gone by left-handed folks were forced to use their right hand because of social necessity and this blighted their lives. Placing extraverted values and a huge guilt burden on introverted people for being what they were born to be and forcing them to socialise by guilting them would place them at a terrible disadvantage within their communities because they would never be able to emulate natural extroverts and this could easily lead to mental illness.
Of course there is no rule that says anyone has to associate with introverted people. There are many folks who prefer to mix primarily with extroverts and feel more comfortable in their company - that's a personal choice, just as when many introverts prefer the company of just a few like minded folks, or their own company. This doesn't mean that either side should inflate their personal perceptions, preferences and comfort drivers into a universal value imposed on everyone though.