Wardhammerhate is pretty prevalent.
Think of the Culture as Star Trek without the pants-on-head retardness, willingness to use tech of the week, and not numano-centric. The main reason that 40k cannot win is the reaction times, by the time IoM, or anything in 40k reacts it is just toooooooooo.....slow and late - it's dead already. Battle times are in pic-seconds, and one outlier, or just a bit of Bank's maths that went a bit wonky means they can temporarily clock their drives at trillions of c. Like I say this was a maths retard moment for Bank's, but reaction times are pretty standard.