Exactly. But a lot of times if you have a coach like that, (more than likely) he'll rub parents the wrong way. Then they (for better or worse) get involved in the process.
Even if they have the best intentions they'll will ruin it.
If (when I played) I came home and said the coach yelled at me, my father would have asked me what I did to get yelled at. Now, the parents take to social media to trash the coach, then call the powers that be, call other parents, maybe call the coach etc; just to find out that their son isn't doing what he's supposed to. I've seen it several times on the middle school level and at least twice on the high school level.