Leon, if you were referring to me, I'm not an expert, by any stretch.
To clarify, I was just offering some help which was beneficial for me at 180-300mm. It was also a habit carried over from long focal length imaging.
Of course, you're absolutely right; at 50-70mm focal length, you'd be very hard-pressed to notice any effects. Having said that, I really can't see the harm in enabling it.
H