Many of the points seem to be hallucinated. Either the author has a poor memory and an active imagination or there has been some poor-quality LLM input.
Examples
> There are apparently no sociopaths – Culture has to recruit an outsider when they need one
Banks describes several ways how such individuals are managed - such as offering full immersion level VR to satisfy extreme megalomania.
> We also see that there are a number of Eccentrics, Minds that don’t fully share the values of Culture. They’re not that rare, about 1% of the population.
I don't believe that 1% figure is mentioned anywhere. I'd be surprised if it was. Eccentrics seem to be much rarer than that.
> We even see GSV Absconding with Style stockpile resources without general knowledge of the other Minds.
This name is made up, and not by Banks. A Google search for "absconding with style" has only a few hits - mainly this article.
I could go on...