I don’t see how there is nothing actionable from sleep tracking.
If I have a week of bad sleep scores I don’t go for a long run on the weekend. I don’t indulge in things I would otherwise do, and I make an effort to get off a screen and to bed earlier until I get a solid 8 hours of sleep
But the sleep score tells you nothing. I wake up and I always know roughly what it will be because I already feel it. If my feelings and the watch disagree, the feelings are correct. I get both pieces of information at the same time. The only reason I track it at all is as a kind of memory of how I've been doing, but I could equally well make a note of my feelings.