Yeah, that’s what threw off my initial argument on the subject, since I didn’t realize he was only referring to long jumping.
I think that he felt that jumping and then crouching in the air would actually be referred to as “jump crouching” since you have to press the jump button first and then crouch, and so that would mean the long jump would be “crouch jumping”
It’s still far more clear just to call it long jumping and skip the confusion entirely.