It's the middle of winter, of course the runway is utilised less. At the moment, in mid-March, it's needed at peak periods as the opening hours testify. We've all been to MAN on many occasions and seen a queue for departures and a steady flow of aircraft on finals, stretching away towards the Pennines.
I have a suggestion; maybe Boston with 26m ppa and 4 main runways should close a couple, and maybe Amsterdam doesn't need all of its 5 with 46m ppa.