yeah I don't feel qualified to comment on the study in particular but from personal experience the sort of 'loss of consciousness' does track.

When I realize I've spent an hour doomscrolling in an algorithmic feed, I don't feel like was 'all there' paying attention that whole period, it sort of washes over you and occasionally it rouses your attention and you pop out of unconsciousness to consume a little nugget of 'content' and then dive back in. It feels not worth it to spend so much time 'away' for a negligible amount of entertainment.

Video games or a book feels way different, like I'm also going under, but I'm going somewhere else, to a place that was crafted by another human with aim of it being worth my time.