Yeah, I actually meant to change the text on the boxes, have the second one explain pulling and then change them all to "interact" instead. Didn't get around to adding that pull animation either, haha.
We had vaulting and climbing as separate interactions because of how we were using them at one point where they were both on the same objects, so that necessitated different key binds. If it wasn't for that situation, I would definitely agree with you. Originally it was built so you can scale the boxes, climb on them, or vault over them, and use them like stairs together, unity rigidbodies didn't want to play nice though.