I'm in no way defending Ollie as far as the job he's doing right now by saying this, but:
I hate the take about him just sitting there in the games. I've coached a lot of games and played a lot, and sometimes that's something you have to do. People sort of assume that means he's not trying to coach them.
If you do things in practice, and harp on them time and again, sometimes in games while the players AREN'T doing them, you sit there, let them play how they want, get torched, and then in film session you point out how YOUR way is what works.
Sometimes it works, sometimes it doesn't. Sometimes on the sidelines, he absolutely should rip into a guy. But a lot of times, you literally can't just keep repeating the same thing. You sit there, let them bask in getting pummeled by playing crappy, then reevaluate next practice.
Him screaming down 30 at a crap shot isn't going to do much.