The stick is part of the equation. It's much more simple to do minor tweaks to his stick than learn how to shoot altogether differently. And let's not blow this out of proportion too, he has a great shot when he gets it off cleanly. Maybe not the most accurate, but it's quick and hard. The problem is, that he flubs the shot too often. It's a minor issue, all things considered.
First of all, Jesse has very long arms and his skating stance is quite hunched (like #99, lol). I have on good authority, that he is using a 6.5 lie stick, which is quite high. Sticks with a higher lie are better suited players with a more upright stance or a shorter stick. Jesse has neither.
That said, I am 100% sure, Jesse knows more about hockey than I do and is more than capable of choosing a stick that works for him, but still, I can't help but wonder how it would affect his playing if he switched to a lower lie or shorter stick. In fact, shorter sticks with high lies can be very effective in front of the net, because it's easier to get the shot off in tight spaces.