Not quite accurate because you're mostly looking just at the guys who followed him directly from Baylor.
Sean Ryan was on staff alongside Rhule when he was with the Giants. So was Al Holcomb, and he was already here so it was an easy hire.
Kevin Gilbride was on staff with Rhule at Temple rather than Baylor. His dad also coached with Rhule on the Giants staff.
Terrance Knighton didn't coach with Rhule, but he played for him at Temple. Rhule was actually his position coach for a season.
Jason Simmons doesn't have a direct connection with Rhule but he does with Phil Snow. Simmons played for Snow at Arizona State.
Mind you, there actually could have been more but some of his guys chose not to follow him. A few others weren't with him long enough or didn't have enough experience to be qualified.
Those were the positions that ended up with other people. But even one of those, DL Coach Mike Phair, ended up gone a year later in favor of Rhule's Baylor DL Coach Frank Okam.
As to NFL experience, the guys who do have it haven't risen above the level of position coaches. None of them has been a pro level coordinator that I know of, and definitely no head coaches.
Add to this that Rhule had been able to get a couple of guys added in front office and administrative roles. Pat Stewart is the highest. Evan Cooper, Sean Padden and EJ Barthel were the others but Padden and Barthel have departed since (Padden under some questionable circumstances).
All in all, there are only about five or six guys on the entire staff that aren't connected to Rhule in some way, most of them on offense.
And those are the guys I won't be surprised to become scapegoats for our offensive struggles.
Both things can be true. Rivera was wrong for cutting heineke and rivera was right for choosing to stay the course and develop heineke. He could have pulled a matt rhule, bring in qbs and wasting time.