You may call BS if you like. I say it's all related. Even if most fighters can catch them at 5k, are they in the right place? The right direction? By the time you turn to them you are behind 'em. Even though you CAN catch 'em, it's still a far cry from the slow, lumbering, easy prey that bombers were historically.
Even though you CAN catch 'em at 5k, you're still working twice as hard as any fighters would have historically, to get the same end result.
But, I understand if I'm sounding like a broken record. I'll drop it.