There is a kernel of truth to some of that, but it is really misleading to try and compare won/loss records and winning percentages between CFB and the NFL. The NFL is set up for parity; CFB is not. You win the Super Bowl, you get the toughest schedule in the league the next season, plus the lowest draft pick. Truly on any given Sunday, anyone can win in the NFL. That is demonstrated time and again in the NFL. While Appalachian State vs. UM (or Marshall vs. ND) games happen on occasion in CFB, you get many more beatdowns in CFB. In college football, teams can (and frequently do) load up their schedule with cupcakes. Teams cannot do that in the NFL, because the League, not individual teams, set the schedule. The NFL draft is set up to be fair; in CFB, on the other hand, the really good teams are able to stockpile the best talent, leading to more disparity. Give the Kansas City Chiefs 5 or 6 first round draft picks every year (the equivalent of what Bama has been able to do the last decade or so), and you will probably see a dynasty.
So the measure of success for a head coach in the NFL is divisional titles won, playoff appearances and games won, and Super Bowl appearances and championships won. While CFB now has a playoff system, there is simply no comparison between the college football playoff system and the NFL playoffs.
So I would counter that winning percentages are simply not a valid comparison between NFL and CFB head coaches.
The point here is that the Pittsburgh Steelers have gambled in 3 straight hires with a young (mid-30's) head coach with only a year or two as a defensive coordinator, and no previous head coaching experience. Sound familiar? By anyone's measure, those 3 hires have worked out quite well for the Steelers. While the ability to recruit is one stark difference between the NFL and CFB, I think most people will agree that recruiting is one of Marcus Freeman's strong suits. Will MF work out for ND as Chuck Noll, Bill Cowher, and Mike Tomlin have for the Pittsburgh Steelers? I don't know, but when you find a guy who you think is the real deal, you take a shot with him, even if the traditional metrics say you are taking a risk. I think that is what Swarbrick did with MF.