Not so remarkable when you consider that tying up RAF planes and burning their fuel on missions like this reduces their combat capabilities. It's the same logic which says that seriously injuring enemy infantry is more effective than killing them, since one dead soldier is one soldier who can't fight but one injured soldier is one soldier who can't fight plus one or two who won't fight because they're evacuating him.
(Of course, Russian doctrine now seems to counter this by leaving seriously injured soldiers on the battlefield to bleed out...)