I guess you're seeing platforming as the 'challenge' of platforming, like platforming-as-combat. I'm seeing it more as a part of exploration.
I got some serious Shadow of the Colossus vibes while playing Uncharted 4, especially when the camera pulls back for a wide-angle shot. In Shadow of the Colossus, there is practically no gameplay benefit or reason to explore. There's a massive world there. And you only ever have one objective at a time, in one place at a time. There is essentially nothing to do in the massive world while you're not going to your objective or at an objective. Yet the 'platforming' and exploration is fucking amazing. You discover cool hidden towns/coves/secrets, little nooks and crannies that suggest really compelling history.
That's the sort of platforming and exploration I loved in Uncharted 4. Sure, it's not there necessarily to challenge you or compel you, but it's this really nice sense of adventure that it builds, especially when there are multiple routes and more open areas. It's the vibe, the sense of the experience, rather than the "act" of it in a methodical way.
To each their own, though. I definitely see what you're saying. It's a pity there isn't more Indiana Jones trap-style stuff in the game. That could have really gone places, though I suppose it would be derivative.
Sounds fucking brilliant.