Looking at some of the dumb moves that are made in real-life, I have been thinking recently that the quality of GM in D5 may actually be higher than the quality of GM in the real NBA.
I found this chart that someone on Reddit made, which is about a year outdated for longest-tenured GMs in real-life.
Since this chart was made (2016), Mitch Kupchak has stepped down as Lakers GM. That means that those of us who joined D5 in 2007 (Ian Noble , Magic Johnson , Larry Bird ) have more experience as a GM with our teams than 23 real NBA GMs. Only Pat Riley, RC Buford, Danny Ainge, Ernie Grunfeld, Larry Bird, Don Nelson, and Daryl Morey top us in terms of tenure!
I have not put the analysis together yet, but I actually believe the average GM tenure of current GMs in D5 (i.e. how long each of us current GMs has been in the league) is comparable, if not greater, than the average GM tenure in real-life. We have 7 GMs here who have been here 7+ years (Mike Krzyzewski, Alex English, Blake Bowman), and a handful of others who have been here 5+ years. That means that D5 may actually be more stable in terms of GMs than the real NBA!