Firstly, I really appreciate your review! Great to see another challenger on the leader board.
I was definitely working on the wall jump down to the last hour, and I agree there is some strangeness there. I typically will try to press into the wall longer than I need to, to make sure I get sprung away from the wall. I noticed that Celeste did something similar with their wall jumping, albeit I did not quite emulate it very well :P. I do in fact disable user input after jumping, but I noticed that if I disable it for too long it makes tight walls on either side hard to get up. I'd love to go back post-jam and tighten the wall jump up a bit more :)
Good luck on getting that top score!