The piece is not balanced of thoughtful. The piece is crafted to present the case in a way that's immune or resilient to typical and expectable attacks. It underlined the core failings of the concept behind a CoC, and it provides a concrete example of how people use CoCs as an oppression tool that's leveraged to manipulate and condition groups to follow the leader's bidding.
> Here, I think the story is pretty much just: people screw up
It really isn't. This isn't a mere "whoopsie". This is a CoC working exactly as it's supposed to work. By design. This is exactly what they were created to achieve. A community member said something, some people didn't approved based on their personal tastes, and thus they proceeded to leverage their CoC to persecute and punish that individual to keep the community in line.
There is absolutely no other use for a CoC. This is precisely what they were created for. This is no accident or mistake.