Reminder: Mx has origins in the feminist movement. When they say they are against Mx because it is "gender ideology" they really mean they are against women (and people perceived as women) having agency and hate men (and people perceived as men) who don't comply with their own patriarchal ideology.
Why should non-binary teachers not be afforded same respect other teachers are granted? Why should they be denied recognition and made to feel excluded? It makes no difference to anyone else's life if they are referred to as Mx. Yet again, this government goes down the route of embedding bigotry.