The journalist might be better advised to ask:
1. Why are fuel saving routes denied or unavailable because of the multiplicity of reserved military areas throughout UK airspace?
2. Are the high navigation charges [in various States] a result of a monopoly ATC service provider?
3. Why does the MOD operate a range of noisy dirty gas-guzzlers which do not come close to compliance with civil regulations.....when did airlines last fly the Comet[Nimrod], VC-10 or early model Tri-Star? Just because the airframe has a military serial number....does that make it OK!
4. Should the "full stack" policy [whereby there is significant continuous planned holding over London] be outlawed?