Tim Hardwick, MacRumors:

When listening to a song from your music library on iPhone and iPad, it used to be possible to ask ‌Siri‌ to “rate this song five [or whatever number] stars,” and the virtual assistant would do so without fuss.

And:

Yet reports on Reddit, Apple Support Communities, and the MacRumors forums suggest that the function is not available in ‌iOS 15‌ or iOS 15.1, and has remained out of action in the latest iOS 15.2 point release, issued in December. Instead of carrying out the request, ‌Siri‌ responds with “I’m Sorry, I’m afraid I can’t do that,” or some variation thereof.

This issue has been out in the wild for a while (here’s a Reddit thread from about a month ago), but the hope was that this was a bug, rather than an actual permanent change.

You can still set star ratings on your Mac and in iOS/iPadOS (you’ll need to enable the Show Star Ratings setting first).

Definitely a mixed message. Are star ratings going away permanently? Are they coming (albeit eventually) to Siri?

Schrödinger’s ratings.