Yeah, Robinson lost his minutes to Max Strus. Wow. Now Strus did improved his 3p% from 34% in 2020/21 to 41% in 2021/22 while Robinson had his shooting decline.
If you accept 538's WAR as an aggregate general indicator, Strus was 3.5 in the regular season over about 1,600 minutes, about what Javonte Green produced. Robinson was 2.3 in about 2,000 minutes, about the same as Reggie Bullock.
I don't think either Strus or Robinson are all that good. Fringe starters at best. Either can get hot and hurt you with 3s but both are also very limited. Strus apparently proved to the Miami coaching staff that he is a little less limited than Robinson.
To me, whether it is Strus OR Robinson in the rotation doesn't matter much but if Tucker is out and suddenly you have BOTH Strus and Robinson in the rotation and at times on the court together, that is something the Celtics should be able to exploit.