No, he doesn't have a point and his criticisms are off point and inaccurate.
For example, he makes it a point to focus on time spent figuring out rotations. First of all, this is something that every team in the NBA goes through one way or another. Secondly, from the get go this team has had a set rotation, so don't know what his gripe is all about on that regard.
Thirdly, he's playing a crapload of minutes and hasn't produced, so it's time to put up or shut up.