Ya, second one is an absolute terrible take. UNC and Duke have 2 of the best resumes in the sport. Overrated? If that is overrated, please tell me what would satisfy you? Because both programs are in the top 4 for number of final four appearances and number of championships. And that is the measuring stick of the sport.
Your bench mark was 50 years. In the last 50 years, Duke and UNC are THE TOP 2 in Championsips and Final Four Appearances.
Here are the teams overall history (>50 years)
UNC- 21 final fours, 6 championships, 5 second places, career .735 winning percentage
Duke- 17 final fours, 5 championships, 6 second places, career .710 winning percentage
Syracuse- 6 final fours, 1 championship, 2 second place finish, career .687 winning percentage
Kansas- 16 final fours, 3 championships, 6 second place finish, career .727 winning percentage
Kentucky- 17 final fours, 8 championships, 4 runner ups, career .765 winning percentage
UCLA- 19 final fours, 11 championships, 2 second places, career .688 winning percentage
Indiana- 8 final fours, 5 championships. 1 second place, career .634 winning percentage.