Here's my take on why City handle things the way they do with the press etc.
HHSM is the owner of City and the culture of the club at boardroom and employee level is directed by him via Khaldoon. In many ways this is excellent for the club in too many ways to mention and that are well known.
However, Mansour is a a member of his country's royal family. To repeat, he is royalty and thinks of himself, and everything associated with him, as such. Remember our late Queen and how she would not stoop to ever respond to any lies, liable or slander aimed in her direction because to her mind it was simply beneath her. Unthinkable to respond to the mud thrown by those too far below to even be worthy of a response.
IMO this is the thinking of Mansour. His concerns are that City is run well and with standards of excellence and those values lead to success and constant winning. As far as he would be concerned, that vision is being made reality.
I actually think there are a number of areas where City could see considerable improvement (ticketing, treatment of fans most particularly) but those issues are not Key Performance Indicators as far as HHSM is concerned when meeting with Khaldoon to discuss City. Likewise, responding to the petty insults of the UK media are not his concern.
FWIW, I don't agree with this approach in some ways. I agree that getting into a back and forth with the dregs of the British media would be pointless and drag us down to their level, but I do think there's more the club could do to protect our reputation and support the fanbase. I just think it's not a priority (or even on the radar) of City's owner for the reasons stated above.