That inconsistency was there even when he could jump. Kratos could also push over 20-ton statues in the old games, but was halted by a few iron bars. It's the nature of videogames. 'Why am I not allowed to fit through those bars? Why am I not allowed to aim my gun in Bloodborne? Why can I hang on to this ledge, but not that one?'
The thing is, the jump never felt like a true platforming ability, just a way to reach a ledge to pull yourself up. Once the Icarus wings got added things got a bit more interesting, but the jump on its own was barely anything to speak of, and certainly not when it came to combat. The chainblade swings were the most satisfying platforming mechanic of the classic games, and those were pretty scripted.
They do definitely need to make whatever form of non-walking traversal for the sequel more mechanically satisfying though. Make Kratos use his axe as a climbing tool and to slide down a wall or whatever. Or better yet, use the retrieval mechanic for the axe so Kratos can throw it at a ledge and shoot himself to the top. They could make it a combat thing as well, where if you've thrown your axe into an enemy Kratos can battering ram himself into them. One button to retrieve the axe, one button (or maybe hold the retrieve button) to shoot Kratos to whatever the axe is inbedded in.