My feedback on this speaking as someone who was, at one point, an above average jump shooter and has spent a bit of time researching "The Art of Jump Shooting" as it were (an Internet expert, in other words)...
1. I agree Connor's form is bordering on "unorthodox" - it's a bit weird.
2. In my experience, there's not a lot that can be done about it. Tweaks? Absolutely. Every good jumpshooter I know thinks a lot about their shot and has made tweaks to it over the years. Given the kind of coaching microscope that Connor is under as a starting P5 D1 basketball player, you can rest assured tweaks have been suggested/tried. But, with form like Connor's, you're talking about a total overhaul to get to something more "orthodox" looking (for whatever that's worth...if his shot was unorthodox but money, we wouldn't be having this discussion!). I've never personally seen that work. Some of that is just well-worn habit, but a lot of it comes down to bone structure, body geometry, etc.
3. I think the whole "square up to the basket" thing is overrated. Some guys naturally shoot that way and some guys can be taught/tweaked into shooting that way...but there are way too many good shooters who don't shoot that way for that to be a hard and fast rule. Myself, I would deliberately angle myself - from feet through shoulders - so that my right shoulder (I'm right handed) was nearer to the rim. It feels very natural and, empirically, is effective. I have experimented several times with "squaring up" (and not just "let me try to shoot a couple differently", I mean systematically working on it to see if it would be effective) and it throws my entire shot off - I have trouble keeping my elbow straight, stuff like that. Angling my body keeps everything aligned for me, it's just my body structure I suspect.