IIRC, The Untouchable, Avery Bradley, was similarly clueless as a very young rookie. The difference here is the Hornets are (wisely)feeding Rivers minutes even though he isn't ready.
Rivers is shooting 39.5% from three. He shoots only 46% at the rim. Is there a lot of doubt that he will be a better finisher when he gets stronger and more experienced?
Like most young players, Rivers is a disaster on non-threes/non-layups, at 24%. Once he figures out his spots on the floor he'll be OK there too.
With his handle, shooting stroke, and NBA pedigree, it will be a shock if Austin Rivers isn't at least a solid starter in the league. I don't see how his slow start is a surprise to anyone who follows NBA basketball closely.
Kobe Bryant shot 28% in November and December of his rookie year, with the same 30 TOs to only 15 assists. (Austin has 60 assists). Skinny, young SGs struggle their first time around the league.