Well, I guess it starts even in the CoC itself it you read it closely?
For example, it says "Examples of unacceptable behavior by participants include: The use of sexualized language or imagery [...]". That is codifying a very specific value, namely one of sex negativity. If you are sex positive, you are at risk of being labeled an asshole for that. (And mind you, that quote continues "[...] and unwelcome sexual attention or advances", so it is clearly in addition to what could be reasonably considered a neutral "respect others' personal boundaries" sort of "don't be an asshole").
Then, there is this whole problem of not considering people who have deficiencies of sorts with regards to social interaction, and it seems to me that that is very much part of the ideology. Try to read the kernel CoC from the viewpoint of an autist, and try to reflect on how included you feel from that perspective when you are essentially told "because we want to have a welcoming environment for everyone, we shun people like you".
And more broadly, not necessarily directly tied to the specific authors (I just don't know the specific authors well enough to be sure), occurrences like this come to my mind: https://www.berkeleyside.com/2017/07/21/kpfa-cancels-richard...
"Inappropriate" and "offensive" are so subjective that you could argue the "code" doesn't really codify anything, it just is a tool to use and to interpret as you see fit if you have the power to do so, while claiming that it's somehow a more objective judgement that you arrive at based on "rules that have to be followed".