That's just my opinion on it from playing the position for 20 years at a decently high level. When you lose your confidence you start trying to guess and close up the "easy spots" so that you don't let a bad goal in, but that's not at all how a professional goalie should be approaching shots. The second you start guessing and moving prematurely instead of reading the play and reacting is the second you become an absolute sieve in net that can't stop anything even remotely challenging. I've done it myself.
Here's to hoping he breaks out of it, but unfortunately this goalie has lost all my confidence in him. This needed to be a statement year for him to show he could be more consistent and be the goalie this team could trust, but instead he has be an inconsistent mess with zero confidence. He may get it back, but I'd be finding another goalie asap if I was Oilers management and having Skinner as a plan B at this point.