I think the phrase, "Some people just dive to look at the fishies", is generally used to describe the person who does the minimum amount of training to get certified and stops there. The implication is that such a person does not have a concern for polishing diving skills, and from what I've seen in my limited (two) resort diving experiences, there are people out there like that. I try not to look down at anybody, but I can see where it would be easy to get some attitude about people who bash coral and destroy visibility for others.
On the other hand, I got to watch an fascinating exchange between two divers a couple of weeks ago. One was a technical diver who does some fascinating and challenging project dives, and the other was a PADI instructor who loves sea life and taking pictures. It was very clear that one considered the other somewhat lesser, and it was sad to me, because the world of diving ought to have enough room for people with varying ambitions, especially if they are all competent and careful. I have dived with both of the people involved in that exchange, and they are both good divers -- both well above the average I've seen. One chooses to take bigger risks than the other. Does that make him a better person, or even a better diver?