I hate guys with weird corkscrew shots. I hate the way it looks. I hate everything about it. Except when the ball goes in. Then for some strange reason I forgive the guy with the weird shot, guys like Jamaal Wilkes, Reggie Miller, Kevin Martin, even Larry Bird. I couldn't stand the way they shot the ball. It's rude, it's unsymmetrical, it's just ugly. Eventually, I learned to live with it.
Peja had his knees pointed together, brought the ball over from the left side and realesed with his elbow pointing up. Ray Allen got almost no rotation on his shot.
The biggest thing is having that straight, consistent release point. For almost all great shooters, even those with ugly form, if you freeze frame as the ball is leaving their hands you see an almost textbook release.
This is true of Lonzo Ball too. His shot mechanics are compleletly ugly up until the release. Then it looks perfect.
What's the difference between a good shooter with bad form and a poor shooter with a broken shot? In the simplest sense it's just that one guy's shot goes in consistently and the other's doesn't. There's a feedback loop of confidence that goes along with consistently hitting (or consistently missing) shots too.
But it's more than that. When I say that a guy has a broken jumper it's generally because the movements are not only funky but aren't fluid and/or have too many moving parts that individually aren't consistent. A hitch is a big one. Inconsistent release point is a big one. Guide hand interference. Different mechanics when set vs being rushed.
I like watching textbook mechanics too. And like you I'll live with an ugly shot if it works.
Fortunately for Fox he doesn't have an ugly shot or terrible mechanics. I think he can be a consistent shooter in time.