Semi-aquatic environments make sense if you look at our brains dependency on DHA (seafood is a rich source) and the hypothesis that our fingers get wrinkly in water after a while to improve grip.
Aren't we a lot more evolved for hunting animals on foot? The whole thing with us losing our fur and sweating with the whole body, adaptations to running and throwing stuff, all of this makes us better hunters, but not necessarilly fushermen.
The two go together. Living with water requires control of breathing. Hunting animals on land requires strong endurance and probably also an ability to carry water.