You do realize that:
His USG% this year is the lowest it's been since his second year in the NBA. He's already been playing a lesser role. Tonight, for example, he took the 3rd most shots in the game. His USG% (as well as minutes) will only drop every year he's a Spur.
For comparison:
DeMar's USG is at 24% (last year and the year prior were 26% and 28%, respectively)
Harden is at 28%
Doncic is at 35%
DeMar's USG% is decreasing as the season goes on and we might see that number drop further by the end of the season. In the game vs the Cavs, he only had a 20% USG (!!!).
He's no longer this ball dominant player who is in the way of other players, at least for the most part.
USG% -- Usage Percentage
An estimate of the percentage of team plays used by a player while they were on the floor.
It's possible DeMar can age gracefully as a player who focuses on drawing the defense and finding other players.
Remember, I'm Team No-DeRozan. And that's only because I don't know how they will make it work with Keldon on the roster. If they figure that part out, I feel comfortable with DeMar on the team.