I'm pretty sure that Danny doesn't care about negative nancies that write on sports blogs.
Danny invested a lot in the player, and is capable of observing the player developing. His defense is very strong, and he's slowly showing an ability to hit free throws and open 3's. He needs a lot of work on shooting and hitting runners in the lane. Danny should pay IT to tutor Marcus.
I hope that Marcus will spend a ton of time shooting in the offseason, and will get leaner in anticipation of his pending Free Agency. I expect gradual improvement in both. Like Avery, I wouldn't be shocked if Marcus continues to improve well into his second contract.