Whilst I wouldn’t necessarily disagree with some of the things you say Navpi, you’re argument has at least two flaws in it. Firstly, 600 movements a day maybe, but only a couple of dozen of those will carry underbelly freight. The vast majority of movements are by EZY, RYR, Jet2 and Tui - not a kg of freight between them.
Secondly, you seem to be under the misapprehension that J-I-T freight is flown on a regular basis. It’s not. It only gets flown when something goes wrong with road / rail / sea connections.
Most contributors on this forum would probably want to focus on MAN getting its bread and butter passenger offer right first. And besides, given how much you complain about Heathrow sucking the long haul life blood out of the regions, it’s a bit hypocritical to complain Manchester isn’t doing the same with freight?