I assume you are looking at the sample chat which may be referenced when you appeal. When appealing the system takes a sample, usually from some of the first reports received in a given time period. Those aren’t the lines that resulted in the penalty.
Overall, name calling is considered toxic behavior, but that by itself calling someone a clown usually unlikely. Now using other disparaging comments and name calling, using inappropriate language, etc… that can.
I should note this isn’t the first violation I see on this account. There appears to have been one in March and May of this year.
Based on the chat you used, Jockoh, including a couple of 4 letter words, using disparaging name calling as you did, slim to none.