Actually, most former players go into coaching or broadcasting (if they pursue anything after retirement at all), and the most successful GM's and front office executives have overwhelmingly been people who haven't played football at more than a high school level, and were more into academics.
Eric DeCCosta of the Ravens played for Colby College, which isn't a high level program.
Mike Mayok made it to the Steelers but never played a snap of pro ball
Dave Caldwell played at John Carroll University, so not high level ball
Jason Licht played at Nebraska-Wesleyan. So not high level ball
Ryan Pace played for Eastern Illinois. So not high level
Steve Keim played for NC State and made it to Dolphins training camp, but never played a snap in the NFL
Tom Telesco was a backup receiver at powerhouse John Carroll University
Rick Spielman played at Southern Illinois and made it to a couple of training camps, but never played a down in the NFL
Snead played for Alabama-Birmingham, but as soon as he transferred to Auburn, he became a front office person.
Jon Robinson Southeast Missouri State.
John Lynch....the first name on this list to have a real football career.
Brett Veach was a backup at Delaware
Belichick played wat Wesleyan.
So out of 34 executives, only 13 of them played football and only 1 of them ever took a snap in the NFL. Only 3 of them played college ball at a school anybody has ever really heard of.
When I look at heads of scouting, the numbers get even grimmer for people who have worn pads.
Your argument is bad.
For 2020:
Jets: Joe Douglas - Played college football at Richmond
Dolphins: Chris Grier - Played college football at UMass-Amherst
Patriots: Nick Caserio (now with the Texans) - Played college football at John Carroll University
Bills: Brandon Beane - N/A
Steelers: Kevin Colbert - N/A
Ravens: Eric DeCosta - Played college football at Colby College
Browns: Andrew Berry - Played college football at Harvard
Bengals: Duke Tobin - Played college football at Illinois and Colorado and then played in the Arena League
Titans: Jon Robinson - Played college football for the Air Force Academy and Southeast Missouri State
Colts: Chris Ballard - Played college football at Wisconsin
Texans: Brian Gaine (last GM before Caserio was hired) - Played college football at Maine and made a NFL practice squad
Jaguars: Dave Caldwell - Played college football at John Carroll University
Chiefs: Brett Veach - Played college football at Delaware
Raiders: Mike Mayock - Played college football at Boston College and had a short NFL career
Chargers: Tom Telesco - Played college football at John Carroll University
Broncos: John Elway - Hall of Fame QB
Redskins: Kyle Smith (closest thing to a GM they have right now) - Played college football at Youngstown State and spent brief time on NFL rosters
Giants: Dave Gettleman - Played college football at Springfield College
Cowboys: Stephen Jones - Played college football at Arkansas
Eagles: Howie Roseman - N/A
Packers: Brian Gutekunst - Played college football at Wisconsin-La Crosse
Bears: Ryan Pace - Played college football at Eastern Illinois
Vikings: Rick Spielman - Played college football at Southern Illinois and spent brief time in the NFL
Lions: Bob Quinn - N/A
Saints: Mickey Loomis - N/A
Buccaneers: Jason Licht - Played college football at Nebraska and Nebraska Wesleyan
Panthers: Marty Hurney - Played college football at Catholic University
Falcons: Thomas Dimitroff - Played college football at the University of Guelph (in Canada)
Seahawks: John Schneider - Played college football at the University of St. Thomas
Rams: Les Snead - Played college football at Troy, UAB, and Auburn
Cardinals: Steve Keim - Played college football at N.C. State and spent brief time in the NFL
49ers: John Lynch - (Future) Hall of Fame Safety
My argument is quite sound. The vast majority of NFL GMs played college football. And the demographics of college football are unlike the demographics of the general American population. Back to your bitching.