What you say is true. However, not being "normal" or socially accepted makes it hard to forge such strong friendships in the first place. Without those basic traits that appeal to any given person, a friendship won't even get off the ground, let alone be at a point where either party is truly accepting of the other.
I suppose those social skills are marketing points. Without the right skills, you can't sell yourself into a friendship. For want of a better way to put it.
Your point is tragically correct, but it once again reflects the truth of the warped expectations of society in general. I have taken relationship and friendship and all that it involves very seriously and worked at plumbing the depths of true relationship for decades now. I have done this precisely because of the superficiality of societal expectations in 'friendship'.
What society expects is for one to 'sell' oneself so that individuals can find something that will please them in what is presened. In other words, people look for how they can benefit from someone else and that will be the basis for 'friendship'. That is contractual acquaintance and not friendship, self-centered and selfish.
There is a whole book to be written on this. However, I have
very few people who I would regard as 'friends' (in fact, two) and am very much a loner, but those few are quite clear about knowing who I really am and accepting me and all of my strange ways, as well as my way of thinking and speaking, etc. But they will not simply leave me there but help me to grow through honest feedback. I help them to grow as well - after all, you have to grow within yourself if you are prepared to befriend an Aspie!
That takes years, decades of commitment, but it is only through those true friendships that I have been able to grow from a fundamentally smashed human being, without the motivation, energy or will to live, to someone who has some form of self-worth with some form of 'executive functioning' on an ongoing basis. (I really dislike that term. There is nothing executive about it, but that is another story).
I write this very simplistically because it is not without great,great hardships at times. I am convinced that we cannot grow without true, deep and committed friendships. Anyway, I simply share from my own perspective, bearing in mind that each one has their own unique circumstances and character with unique Aspie traits. I certainly do not mean to minimize the experiences of others.