I'd agree with all of this, with the caveat that at lot of what your saying is both called out in the article and in a lot of advice around writing a code of conduct (example: https://adainitiative.org/2014/02/18/howto-design-a-code-of-...), so it's not even clear to me that this is a problem with the majority of the CoC organizations/enforcement.
Even here where part of the problem in the vague requirement ("be kind"), the biggest problem is they didn't follow their own processes of having an actual dialog. It's a bit like if you walked into a US court and the Judge immediately says "I talked to the victim and your clearly guilty", it's not the process that's the problem, it's that the process wasn't followed. Maybe like the court system there should be an appeals process (not sure what that might look like).
Even here where part of the problem in the vague requirement ("be kind"), the biggest problem is they didn't follow their own processes of having an actual dialog. It's a bit like if you walked into a US court and the Judge immediately says "I talked to the victim and your clearly guilty", it's not the process that's the problem, it's that the process wasn't followed. Maybe like the court system there should be an appeals process (not sure what that might look like).