Interesting, well-written stuff (link), though I look forward to more of Brian's analysis.
To summarize, Patterson's last Ole Miss OC relied on receivers winning 1-on-1 matchups against teams with less talent and quick throws/RPOs against the 'Bama/LSUs of college football. Importantly, however, that offense did not require him to make a 'read' in the traditional sense of the word. He isn't looking at a linebacker stance as much as he's trusting his receivers to get open after they make route adjustments based on the coverages. In this context, Patterson is praised for his ability to drop the ball in a bucket and knowing where that bucket needs to go. He definitely has great tools.
The negatives start with Patterson getting spooked after LSU/'Bama DLs aged his body by a few years. Patterson's throwing mechanics (which apparently need work to begin with) are entirely abandoned and get further out-of-sync. This even showed up against Cal. Also, the author asserts that Michigan runs a ball-control offense that relies much more on precision and reads than did the Ole Miss offense. If Patterson's INT rate persists, it will be unnacceptable in this different schematic context.
Questions. I'd really appreciate it if any knowledgeable commenters can get into the weeds about his throwing motion, comparing the Ole Miss offense to Michigan, and some ideas on the probable transition cost.
Edit: Welcome back UMBig11! I hope all is well with your family, and we look forward to your insights whenever things clear up for you.