Yes. It can even tell you when you're snoring (instead of your partner).

Skeptical it can glean all of that without EEG, let alone without heart rate.

Heart rate can be discerned remotely using infrared cameras [1] so that would be doable.

[1] https://www.thinkmind.org/articles/smart_2017_2_20_48002.pdf

Check out some details in the second blog link.

Of course a sleep clinic with a lot of sensors will give you much better results.

The analogy would be a massage chair vs masseuse. Different price/convenience tradeoffs.