Reviews of advance copies lose their value when the book is swamped with fake reviews that were written years before publication. How many of Goodreads’ reviews of The Winds of Winter do you think are “reasonable”?

Newspapers and reviewers published in them have exposure to their reputations. Readers who get advance copies may have no reputation to care for or defend. Book publishers could send a few one-time codes with each advance copy if they wanted attributable reviews instead of astro-turfed buzz. Knowing the various incentives, I won't hold my breath.

Sounds like a great reason to ignore the reviews in both GoodReads and newspapers.

Not to single those things out. User-created reviews have been thoroughly poisoned by marketers and other scammers for many years now. They all deserve to be ignored.