What's the alternative? After the big tourney games, Ward definitely shot up in terms of analytics, but prior to that he and Rob were very similar in team performance, with Rob the slight advantage. And Ward couldn't play many more minutes because he would foul so quickly.
Evan Miya data over the course of the year suggests that Rob should've played. Ward maybe gets more minutes after his tear through the prior 4 games, but his foul frequency was so high that he couldn't play many more than 22-25 mins/game anyway.
The data said that Lipsey and Gilbert were irreplaceable. Ward was on a heater and should've played a lot, which he did save for his foul trouble. The drop-off after R. Jones and King, our #6 and #7 rated players in Evan Miya, was massive.
The problem was Ward couldn't stay on the court. There was no one else on the roster that could create a lineup where the team's performance didn't dip significantly.