I'm sure that generally that is true, but my brain tends to pick something from a show, movie, song, and play it on repeat for the entire time I'm asleep. This results in me having terrible sleep. I play a show or movie as I'm falling asleep and this doesn't happen. I usually fall asleep within 5 minutes. When I have a decent amount of sleep 6+ hours, I wake up refreshed using this method.

Again, I'm not saying you're wrong. I'm saying there may be exceptions like mine.

I did not downvote you, because I don't downvote people who are trying to have conversations/discuss topics.

Related to the use of an articulating arm for watching in bed, it was amazing when my neck and back were hurt and I needed to lay totally flat for a few days.