Well, that is the question, isn't it?

I feel like I dream all night long. Random dreams- nothing that speaks to a particular worry.

Then, what's the concern?

That a little machine with a motion sensor and a few if statements is determining the quality of their sleep. (In fairness they also complain of being tired)

It's their complaint that concerns me.

The concern is feeling tired all the time, mainly.

My fitness band's "Deep Sleep" count seems to correspond to how tired I feel, even before looking at it.