Here was your quote: "IMO Buchner is truly just a short way from being a difference maker."
The difference is Buchner HAS the potential to be a difference maker, while Hartman has already SHOWN it. Let Hartman start and Buchner have his package sprinkled in. Give Buchner another year to develop with Hartman as an example, and then Buchner still has 2 years to start in 2024 & 2025.
The alternative is similar to the start of this year. Buchner is close but not there yet at the beginning of the season and we lose a game or two.... but will figure it out by the middle to end of the season. Hartman can allow you to start the season with high level QB play from the beginning and is what you need if you are hoping for a championship season. Buchner can still have a place in this offense and a future at ND and Hartman can lead the team to start the season. I see it as a WIN, WIN.