Dandridge and Reid were never superstars, even on their own teams. But they were better basketball players than about half of the current all-star teams. But why has offensive skills declined. Some say defense has gotten much better. Others say referees refuse to call fouls.
Athletes enter the league too young and unpolished to develop properly.
Coaches lack the power to discipline players who do not play within the framework of a team. Big money has softened the league-wide work ethic. All of the above is true, plus a host of other factors. You add them together and you get boring basketball. Too many players lack the skills to score.