I happened to reread it recently and was absolutely blown away by how relevant it is today, and how it is almost certainly more relevant today than when it was written.
I think Vonnegut really had his pulse on the human condition. Writers such Aldous Huxley could capture parts of it but Vonnegut seemed to capture it in just about every book.
Just coincidentally, I read Player Piano during my introductions to GPT-2 (summer 2022).
One of my brothers asked (out of legitimate concern) if I needed to visit a mental institution... because there just is no way you are talking with machines about books — about such fantasies.
Granted, my life has been a series of abuses; but Vonnegut helped me realize the impossible isn't so.