We should be judging by value not quality. In baseball, your catcher might be your 15th best player, but you can't start 9 without one.Minutes played is not a great measure of quality. Our rotation, by quality and without including Gallinari, is roughly in the following order:
Tatum
Jaylen
Smart/Timelord
Brogdon/White/Horford
Grant
Pritchard
Kornet/Hauser
Grant is our 8th best player, not 5th.
If Grant is fifth on the team in minutes, that means that his role is really important. That probably drops a bit this year if everyone is healthy and Ime plays a tad smaller, but I don't think that it's particularly material that we now have four guards that are better players than Grant.