I think the situation is the other way around: * Singular “they” can be the correct pronoun for some people, especially enbies. * Monica does not want to use

I think the situation is the other way around: * 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.