I completely agree with you, unfortunately.
The NFL is a very stuffy corporate culture. Suites, well-kept facial hair, etc go a long way in that business. I believe Matt Patricia is a non-conforming, go-against-the grain type of guy. Just look at him. The beard. The backwards hat. The t-shirt from yesterday. His visuals are the exact opposite of what superficial team owners and what lackey execs that run NFL franchises look for in a coach. They want professional-looking. They want clean-cut, facing face-of-the-franchise guys. I totally get that. While I'm sure other owners and other execs think very highly of him, his appearance absolutely does not help him be a HC. I'm convinced of it.