I felt awkward around DFed people. As a kid I think I was kind of scared of them. Curious though, as to what their life was like. Now that's just with people that I actually saw.
With people that got DFed and I never saw again I did feel superior. They were so stupid but I was so smart for choosing the right path.
I never had to do much shunning in person. When my younger brother was DFed I struggled. The situation was strange, the elders were assholes, and it was my first personal glimpse into it all. I realized that it was more about crime and punishment, or in his case assumed crime, and really messed up.
I chased after my brother even after he was DFed. I wanted to help him. I left notes on his car that he apparently never got. I wanted him to know that not all congregations were as messed up as what we grew up in. I'd later find out I was wrong there too. Anyway, I did care genuinely and wanted to help.
Eventually I spent years reading books on psychology, emotional health, narcissism, etc. I realized how horrific the act of shunning was. It is psychological manipulation and torment. My first act of rebellion was finding my brother on Facebook and reaching out with an apology. The rest is history.
So I had a complicated relationship with it all. Sometimes I felt superior, sometimes awkward, other times compassionate, it was circumstantial.
Shunning brings some back if they had close ties that they missed, though they came back for the wrong reason. It pushes others away and they'll never go back to such conditional relationships. So much is variable. It depends on individual personalities, circumstances, etc.