As per interviews, Spinrad now actually thinks that older books should be priced lower than newer books and that e-books should be priced ~20% less than the same paper book.
But yeah, we noticed Spinrad's lack of darknet non-formatting clean-up
the first time he KDP-ed his books. Apparently he's been ill. And he is in his 70s and given the attitude of some other authors around that age (Bradbury, Harper Lee, etc.), it may even be some kind of minor victory that he doesn't claim that e-books aren't "real" books and refuse to release in them until enough money is waved under his nose.
And his other stuff is being reissued by Gollancz and one of those small publishers that posts in the Author Self-Promo forum (the one that's been doing the Ben Bova re-releases), so hopefully not everyone trying his work walks away with a bad impression. Or at least does so from problems within the story, rather than with the text of it.