They can both be a problem, it doesn’t have to be mutually exclusive. I’m sure in all the turnover Trump removed some incompetent people. He also probably removed quite a few competent people. The ratio is what matters.
Although, the guy at the top sure runs his place like a TV show, where all the stuntmen really do die for real.
Except that you can look at all of the firings the current administration has been behind and the pattern does not suggest that they are intended to remove people who were incompetent.
To the contrary, the large number of reductions (and forced retirements) suggests that the administration is trying to remove political opponents and people who are "disloyal" to it, and to generally weaken institutions that the administration doesn't like or feels threatened by.
This is especially visible in the military:
https://www.cbsnews.com/news/military-leaders-fired-forced-o...