Am avoidant. Can confirm.
The one thing missing from the article is that we tend to be in unhealthy (or toxic) relationships. So yes, I saw myself in every point here, but I also know that my partners have all had their own issues that, between the two of us, eventually lead to the final breakup of the relationship.
In my last relationship, I was able to access and be more open with my feelings (huge growth), until I wasn't, but then it turned out he was controlling and actually was trying to isolate (or trap) me. So the thing I fear most was also the reality.
I've given up on relationships at this point. My life is much more peaceful alone.