17.7 PPG on 15.9 FGA? That is horrendous efficiency.
Smart may be one of the worst scorers, but he makes up with his defense, leadership, and his underrated passing. If we're taking into the sake of the argument value-wise? Sure, Wiggins may have more value due to being a scoring wing, but his value plummeted.
When your shooting splits are 44/33/64, those buckets aren't helping anyone but the opponent, especially considering his lack luster defense, and his inability to make smart decisions. Even if Butler has been frustrated, it isn't just him, or Thibs, but the fact he came out and expressed frustration at being the '3rd option.'