Access to information and discussion should not only be accessible to those who can pay for it piece by piece. The advertising based model has huge problems and might be at the end, but I hope other alternatives persist.
HN and others als show that an account is not needed to recommend good content by using the voting system. But in my opinion the article frames personalized recommendation systems tied to an account, like on Netflix, too negative. I and persumably many others enjoy that it knows what I like and surfaces similar content.