one thing to keep in mind, and fivethirtyeight montage of the Kings fast breaks shows, Kings speed strategy is to have everyone, including centers, sprint down the court. Check that fivethirtyeight video and the common thing is WCS on that fast break.
Traditional rebounding is not his strongest characteristics to begin with.
However, it is hard to say which number of overall rebounds is his fault vs the Kings run-run-run strategy where they are counting for him to beat his counterpart in sprinting.
I cannot think of any center that could fit that sprinting role better than him.
You can solve defensive rebounding, but then you have to have center under your basket, and you are giving up the pace which is the way Kings are beating opponents.
That being said, as pointed out before, teams will get in better shape, Kings will wear themselves out and this strategy being the 100% probably cannot work for the whole season. I do not think Kings have a more winning option right now.
The next step (next season) is to mix run-run-run with the organized team defense and slower possessions as needed so Kings can choose how to beat opponent if run-run-run alone does not work.
Step by step...