I didn't interpret CMoney's post as Sprague=Mayfield.
I interpreted his post as Mayfield = typical walkon....
I didn't take is at that at all. For what it's worth, I don't think Sprague is a typical walkon, either. A typical walkon comes in in fall, tries to make the team, realizes he'll never play, and leaves in the Spring. Ohio has 5-6 of those every year. A better than average walkon is a player like Terpin, or Cunningham, who plays every game, perhaps mostly on special teams, but he contributes. A much better than average walkon actually earns a scholarship, and may start some games. A truly exceptional walkon is a player with NFL potential, or at least all-conference potential. An Ohio example would be Dak Notestine. I would put Sprague in the "much better than average" group.
Going back to the original post, it said that a walkon should never start at QB. All it takes to refute that is one example of a walkon who should start at QB, which C. Money provided. From there the conversation degenerated into whether Sprague was the same as Mayfield.
If CMoneys "point" was to simply establish that walkons start at QB all anyone had to say was Oregon, Syracuse, Boston College, OHIO, Oklahoma, and others have started walk on QBs at some point this season....
I don't think his point was that walkons DO start in the FBS. Everyone knows that. His point was that there are some walkons who are good enough that they SHOULD start.
Myself, I'm a believer that the walkon program SHOULD routinely produce a player every couple years who is good enough that he SHOULD be starting, and who should have gotten a scholarship from the start. There is very little difference between the best walkons and the worst scholarship athletes, and if the best walkons work harder than some of the scholarship athletes, some of them will blossom into good players, and that can be true at QB as well as any other position.
There are lots of examples of Ohio players who did exactly that - worked hard, and played well enough that they proved they SHOULD be on the field. Some would pop into mind include Shelby, Chad Moore, Corey Hastings, Dak Notestine, Ryan McGrath, Devin Jones, and AJ OUellette, and I'm sure there are others. I'm not ready to add Sprague to this list yet, but I'm not ready to exclude him from it, either. He has improved a lot from his Freshman year, and if he continues to improve, and most importantly, if the OL improves next year, he may look better than most expect.
Unlike some, QB is not a position that I worry about for next year. For me DB is scarier mostly because so many will be gone, and some new people will be playing, and I have no clue at all who those might be.