I felt similar. I finished it but couldn’t finish the sequel. The primary idea was “intelligence can take different shapes” and I kept reading to get insightful descriptions of these different shapes but they never really came. I don’t disagree with the premise it just didn’t really get across the message very well.
> The primary idea was “intelligence can take different shapes”…
IIRC, it was more "intelligence may be a maladaptive dead-end".