What the notice actually retires
The scope is a particular Search contribution feature, not Google's entire review ecosystem.
The accessible accounts describe the retirement of entertainment reviews in Search and the closure of the profiles used to manage those contributions. They do not provide a first-party document that this article can independently authenticate. That is the limit of the evidence behind the word “notice” in this section.
There are two separate events in the reported change: a review ceasing to appear in Search and a profile becoming unavailable for managing past contributions. A date for the second does not necessarily tell us when the first happened on every person's screen.
A review of a film is also different from a review of the cinema building on Maps. One concerns a work; the other concerns a local business. The reporting concerns the entertainment feature. It gives no basis for announcing the end of Google's entire review ecosystem.
That distinction is the first useful step when something seems to have vanished. Identify the missing contribution and the service that held it. An old comment on a film, a cinema's star rating and a third-party score in a search result require different explanations.
Written comments, star averages and thumbs-up percentages should also retain their own names. A report about one contribution system cannot establish the fate of every related display merely because people casually call all of them “Google movie reviews.”
Entertainment reviews and their management profiles