[morpheuskafka]

That's awfully strange they would have a problem with that, because there are some non-binary people who do welcome the use of all pronouns and even discourage people from using only one, or only the one they were initially using.

If someone is really okay with all of them and wasn't just saying it to be disrespectful, then it's fine. If they said it just to devalue someone else who did care (but really cared themselves all along and in no way would actually be okay with it), then it is wrong.