Dips are Like Wide Grip Pull Ups for the Back..They are Hard..Very Few Folks Can Handle the Weight of their Own Body Mass when its Just Hanging with Gravity..So they Avoid it..
I Trained with a Guy can came 2nd in the Worlds Strongest Man..We used to have a Laugh because when he was having an Off Cycle from his Steroids I was Far Stronger than Him with a 26 inch Waist & Under 12 Stone..I Trained Naturally & Never went Down that Road..
I have seen Guys at 25 Stone Plus that Cant Dip or Do Lateral Pull Ups for more than 2 or 3 Reps..They have No Core Strength because the Androgenic Drugs Blown them Up like a Blow Up Doll with Minimal Effort..
The Guys that Trained for Show with a Few Exceptions were Weak as a Kitten..Hell they were Scared of Breaking Sweat encase they lost any Mass..
There are Few Serious Weight Lifters in any Gym today that Train Naturally..Or for the Last 30 Years for that Matter..
Billy