The first thing I’d like to say is, “If it works, don’t fix it!”
I go to sleep every night watching a Netflix show on my phone. (I do turn the volume and brightness down.) I find that I rarely last 10 minutes before I fall asleep. If I don’t do this, my mind is likely to be racing and keeping me awake for hours.
You have found something that clearly works for you. Don’t let anyone tell you it doesn’t, you already know better.