I did my training the hard way, resort course with one instructor, OW bookwork and pool sessions with a local instructor, last 2 checkouts with another. I got quite a sampling in the range, an Uber veteran (4 digit padi number), a 10y plus guy, and a fresh off the press instructor. They were all courteous, professional and knowledgeable. The new instructor was very excited and just happy to be doing what he was. The 10 year guy was still excited, had the knowledge and skills needed and did a wonderful job in my opinion. The old salt still liked what he was doing, but kinda acted like he was doing us a favor by instructing us. It's all subjective.
I found a wonderful instructor with every quality one could want. I've stuck with him ever since and we've become friends.
It's a case by case basis, the number of dives doesn't determine skill level. The instructor mentioned by O.P. sounds like a buffoon. Too busy proving how much better a diver he is than someone else. It's a window into today's socitey of immediate reward for minimal cost/effort.
BTW literature is art, regardless where it is written. I enjoyed the post.