I have no axe to grind here as I no longer live and work in the north west but when I did, I travelled fairly frequently through MAN. I recall posting several years ago about the poor experience in security (and also non-working travellators & escalators) and the usual Manchester ‘supporters” were quick to deny there were problems.
I always rated the Manchester security as one of the worst that I had to pass through, domestically and internationally, and found those manning it frequently rude and officious.
I always got the impression that the airport’s top management were more concerned with returning profits to the shareholders than investing in customer experience of Manchester’s long-suffering travellers.
From reading the recent posts on this thread, it seems nothing has changed and there are still those on this thread who look at the airport through rose-tinted spectacles