Airlines don't "like" specific airports. They make money from passengers and routes. Airports are an integral part of the system.
All this supportive and competitive stuff about Manchester Airport looks very silly and immature. It is an airport, and not a particularly good one. (Visit SIN, KUL, YVR, CIN and you'll see a good airport. Visit GOI, BOH, TIP, and you'll see a rubbish one). This from pax perspective.
Now if you operate into an airport as a pro pilot, you'll get a very different impression. MAN ATC is generally very good, (no weather radar though) but once one has negotiated the tortuous ground routes onto a badly equipped stand, handling is generally poor. As for r/w and taxiway maintenance, again 3/10 at best. A lot of money seems to have been wasted making MAN a shopping mall, but that's just my view.