Why is it silly? We are in an era where we are trying to say males and females are equal and it does not matter what sex you are, as long as you are good at your job you should be able to do it.
He put his arm on the Asst. Referees shoulder. It only becomes wrong when you say female asst, and seek to make it sexual or when it is simply because it is a City player
There is the photo going round of Pogba with his hand on some bald refs head, that looks really condescending and totally wrong but nothing was said or done. Double standards because she is female ? (or because it is City)