Autism is a disorder, diagnosed in DSM V. Very few people in your life are likely to be autistic. As with many such things, it's a spectrum. Unless those cross a pathological threshold, it's not autism. Few SWEs are over that threshold.
We used to call people "nerdy," "quirky," or other things (and it was okay to be that). That's in the natural spread of human personalities. If you're 5% of the way towards dyslexia, autism, obsessive-compulsive disorder, or whatever else, it's in the range of human personalities, not disorders.
It's helpful to understand how different people work. Most SWEs and introverts share some characteristics with people with autism, and reading about autism can help understand oneself by interpolation. However, the label is not fair either people with actual autism, or to people without autism who believe they have it.
Footnote: My experience is that extrovert versus introvert is mostly a function of whether you're invigorated by interacting with people or tired by it, and especially by people you don't know well. Yes, social skills are helpful, a skill one can develop, and important to one's career, but so are math or medicine. A good strategy for an introvert is to partner with an extrovert.