I don't know that I'd go that far. I'd say they may have been conditioned to expect that, but given the popularity of the movies and mini-series you mentioned, as well as some you didn't, I'd say that the public (whatever that is) can still be moved by books and visual media where characters are developed and some of those characters die.
Plus, ultimately, we're all somewhat moody in what we read or watch (and we do make up part of that public). Glitz can be entertaining on some days.
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