As others have said, it gives the appearance of the yips and/or performance anxiety.
Basically, there's a "correct" way to think about performance mistakes; learn from them, but don't dwell on them. If you dwell on them--especially in the moment--it puts you in a headspace (confidence, anxiety, ego, whatever the case may be) where you're more likely to make another mistake, and that's a vicious cycle that can snowball pretty far. I instruct motorsport and see it there. We try to pick up on that in drivers, because if failures cascade in motorsport, it doesn't just risk slower times (aka missed shots), it risks dangerous crashes.
That said, I'm not a basketball coach and it's not something you can diagnose just going on what you see in games. I've no insider info on practice or their relationship and can't do more than speculate. It's just, there's been times when Red has seemed angry, and I'm sitting there wishing the attitude was more like "Forget that. Take a minute. You're a good shooter."