A lot of angry posts above challenging the assumption that it is the DM's responsibility to baby-sit the group. You may not like the assumption, but in a great many parts of the world with a large tourist diving population, I am afraid that is the reality.
Absolutely.
As I said earlier, there are many places where the DM takes total charge of the dive and does indeed babysit. If divers experience a few consecutive places like that early in their dive careers, then that is what they will expect wherever they go.