The original post is saying "I refer to people as they" and SE is saying that's a violation of the code of conduct.
So what do you think of that?
* Singular “they” can be the correct pronoun for some people, especially enbies.
* Monica does not want to use singular they for grammatical/stylistic reasons – when talking about persons of unspecified gender, alternative constructions are available.
* SE's CoC clarification supposedly says you must use the correct pronoun if it is known, including singular they. Constructions that intentionally avoid pronouns would then be ruled out.
* This is not a ban on the use of singular they.
Of course, SE's new CoC or new interpretation is still not public, so its actual contents are unknown.