The idea that the only reasonable path into a software related career is through networking may be true, but it obviously signals something deeply wrong with the culture around work.
It is also something which is likely to be quite harmful, since it selects for people who are great at networking over people who have good technical skills. Obviously interpersonal communication is important, but how well a 20 year old in University performs at it should not doom or make their career.
And even people with bad social skills deserve to exist and should be allowed into their chosen career. Being someone who does good work and is respectful, but not overly social, should be good enough.
I agree with you, actually (I'm the original author of the post). It's literally one of the main reasons that I'm writing about networking so much. I have seen so many people fail up in technology because they were good at networking while so many other people who had better technical skills felt stuck. I don't believe that to be a strong networker you have to be social, though, just intentional. Technical people who may struggle with the people side of things can leverage their systems thinking strengths and apply it to stakeholder, mentee/direct report, and cross team relationships in a way that helps them move the needle on their goals. It's not easy, but I do think that intentionality and sincerity are key.