Honestly, I haven't read the book, but what you say is very real scary because of how much it resembles what we see every day when we open any social network. That censorship does not come only from someone with power, but from our own comfort and preferring screens so as not to feel "uncomfortable" with deep thoughts, seems to me to be a slap in the face of necessary reality.

I was really struck by what you mentioned about Millie and how she prefers fictional characters over her own reality; It sounds exactly like what is happening today with the phenomenon of influencers or the infinite content that keeps us anesthetized. It made me really want to read it or just to see if I too wake up a little of that lethargy that you mention.