It's especially infuriating what they did to Altered Carbon when you consider how much of the changes do not add anything to the adaptation (although a very few were improvements, like Poe); quite the reverse. They also completely castrated the books' political message - especially when it came to religion, and to a lower extent anti-capitalism/centralization.
That being said, I imagine it still makes for a watchable show for someone that knows nothing about the books.
In any case, I love both series and I pray dearly they don't fuck up the Culture adaptation.