I'm sure the Torygraph is appealing to its core constituency of reactionary shire-dwellers to alarm them that they might actually hear the aircraft they love to fly in, on their business and holiday trips.
This will undoubtedly create an enormous fuss as everyone tries to make everyone else have aircraft fly over them while they themselves continue to use aviation for business and pleasure. They want all the gain, none of the pain. One has to bear in mind that the Prime Minister's constituency is full of well-off people who like the convenient global airport nearby (Heathrow) but don't want the aircraft to fly near them, instead to fly over some other (probably poorer) people. Now that the Boris Island airport idea is (mostly) dead, the next-best thing for his constituents is to direct the flights to the existing airports over someone else's head.
A cynic might also ask what unrelated things the government would like to bury under the noise screen, and who will be left in the worse position when the music stops and the chaos settles.