This is a very true statement. Whether your rest is a tree,knee or whatever, a rest should be used. Don't think I've ever shot a deer with a handgun without some kind of rest.
Is true, I may practice off hand but in the field I use whatever support I can get from my walking stick to fence post to the side of a tree. Only one deer was ever taken without a rest and it was a snap shot at about 35 yards with the Dan Wesson .357, yep, 4" barrel, so much easier to cart around in a holster.
Good intentions will always be pleaded for any assumption of power. The Constitution was made to guard the people against the dangers of good intentions. There are men in all ages who mean to govern will, but they mean to govern. They promise to be good masters, but they mean to be masters.