Earlier quoted context omitted.
My intuition is that 'underutilized' is probably not the reality of things. One can take bad shots - and part of Steph's magic is knowing what is a good shot for him. And for him, an incredible shooter, this means plenty of shots from anywhere on the court.
The author of the 538 piece makes an interesting case that he may actually be underutilized. The gist is that his efficiency has not gone down as his number of shots has gone up, and that a "bad shot" for Curry is still better than a "good shot" for most other players.
I feel like he may be "underutilized" on a 73-win Warriors squad that includes Klay Thompson, etc.
But if you asked him to put up 40 shots a game playing on a team with one of the NBA's worst offenses - it would be a whole different story.