Oof. What is up with these creepy, sweaty dudes on talkshows? I know they somewhat reflect the general populace, but to pull shit like this on air is just boggling.

I see you repeating the claim that it makes sleeping more difficult, but I do think those that listen to sounds, be it ocean waves or someone talking, have the experience that it makes it easier for them to fall asleep.

Sure, there can be problems with sleep quality for numerous reasons. However, making a blanket statement that this disrupts the sleep, especially of those that have positve experience with it, is going to need some factual sources (that I do not think exists).

According to what I have read, it is fine if it is not too stimulating.

EDIT: Also, it is easy to take a break from coffee: It only requires not drinking a few cups. Either way it does not really prevent fatigue, at most delaying it.

How is it bad sleep hygiene to fall asleep to noise? If it is adequately non-engaging, it is pretty much the same as other white noise. Furthermore, it really depends on each person what makes them relax.

To paraphrase an actual sleep scientist (and not just talk out of my ass like most people do about health):

It is easy to see know if you are getting enough sleep. If you feel tired during the day, you need more sleep.