Still no one has an example to indicate that holding back is not an effective tool.
C team dad and his imaginary kids are imaginary outliers.

If you live from Phili to DC being a holdback is not odd but the norm. Two year holdbacks (pre-first) is very common. C team dad's imaginary kids would be crushed by these September born two year holdbacks. But the adversity would make them stronger. Burgers are done C team dad.

How old do you think the kids at Culver are?

BTW how did you get the ages of the "True" freshman at those schools. In 2011 most schools took the DOB off of the website. Lyle Thompson's age has changed at least twice.