Not debating what you say here, cause I agree with it. But just looking at his numbers so far this season -- he's averaging 6-11-6 (rounding the numbers out) and has typically been known as a very good defensive player.
Isn't that basically what Draymond Green has been doing? The past 6 years the dude has averaged 8-7-7 and is more known for his defense and passing ability. Just like Simmons. And is also a sub-30% shooter from 3, just like Simmons.
Part of me wonders, if durability hadn't been an issue the past 4 seasons and Simmons actually played 60-75 games per season -- could the Warriors have won equally had they swapped Dray for Simmons?
Just thinking out loud ....