This has been true for absolutely forever. for as long as we've had Petrie. There is always a lot fo dopubt about who is responsible for what in our fornt office, but that crap is all him. he did it back int eh golden eyars as well. Simply refused to ever clear out minutes and time for anybody. Always cluttered and cluttered and cluttered wiht "good basketball players, can never have enoguh!" wihtout ever picking up roleplayers and guys abel to settle for lesser roles.
Now that said, TRob is a bust so far not because he won't be an NBA player, but because we were stupid enough to believe the hype, that he was an older rookie who was going to come in NBA ready and START for us. This despite him being a lousy fit next to Cousins mind you (more of Petrie's clutter approach -- smother your offensive weapons in even more offensive weapons because chaocs is awesome and defeined roles are the tools of those weakling contending teams, not us genius perennial losers). But anyway, regardless of game, there was no clearing out to be done, because TRob was going to be playing over all of them, not fighting for developmental minutes.
And yes you have ot only lookup Fredette, Jimmer, for another example of the same dynamic.