Both of you were at wrong in my opinion.

However, he was playing properly every other single round BESIDES that one round where you took his AWP.

You might of felt like he deserved a kick because of that, but I think that he deserved a second chance since anyone probably would of been infuriated when their gun gets taken. He immediately started playing properly again after that round for the remaining of the match.

People usually take CS:GO pug matches slightly more seriously, so when someones gun gets stolen they tend to react a bit more heavily. I hope you understand. I did not ignore your request to kick him. I just found that there wasn't a need to kick him at that point.