I love his clownish qualities. That's old fart-ism to think that you need to be gruff and serious all the time. It's "his girlfriend is ugly; he has no confidence" vibes-based bullshit.
I love what he did in that press conference, where he snuck in and then asked a question. The team hasn't quit on him.
His personality isn't an issue as a person and in life in general. There is nothing wrong with a clownish, quirky, offbeat guy as a person.
The problem comes when you put him in the capacity of
head coach of a professional football team, where "the team takes on the personality of its coach," and the team is playing the rough and tumble game of
football.
Then being a clown is a problem. It's fundamentally inconsistent with the job.
If McDaniel were coaching a tiddlywinks or a pickleball team for example, two sports completely different from football, his personality wouldn't be a problem. In professional football it makes him woefully inadequate, however.
There is a reason there is no exceptionally successful head coach in football history (college or pro) who had a personality like his. It's because it isn't consistent with the nature of the game.
Go back and watch Bill Cowher in the video linked in the original post.
That fits with football. McDaniel does not.
Nothing wrong with him just as a person in general. In the capacity of the head coach of an NFL football team,
plenty wrong.
In life in general he's a square peg in a square hole. As the coach of a pro football team, he's a square peg in a round hole. He simply doesn't fit.