This.
Also, you've missed early milestones that are necessary to develop yourself into a socially successful person.
For instance, an NT normie or good-looking guy would have had experiences forming groups of friends, having his voice heard, expressing his opinions and tastes and having people around him respect him. It is normal for an NT adolescent male to be able to organize groups of like-minded peers around activities (sports, parties, trips, etc.). Also, normies and NT guys have had formative "romantic"/sexual experiences, such as interacting with girls, talking and wooing them, touching them in appropriate and affectionate ways, and having sex.
A non-NT or ugly male would have none of those experiences. He would reach his 20s without ever having had the experience of leading a group of people towards a project, or eliciting attraction from a female, or even getting attention from an audience. The neural connections that are responsible for these social endeavours would simply fail to form because there were not enough opportunity to develop those.
And there is no way to develop in your 20s and 30s the social skills that you should have developed in your childhood or early teens. First because your neurological development has all but ceased; second because people don't give adult spergs the opportunity to try and fail in these attempts --- normie adults expect spergs to behave and perform socially like normie adults, something which spergs can't do since they hadn't had the early formative experiences. You need social experiences in order to develop newer social experiences.
I call this the "arrested development pill". You can't catch-up with time.