Earlier quoted context omitted.
I feel like that doesn't place enough weight on the bull hypothesis- the devices are bad because most things are bad, because being good is hard.
Might be that, but on a meta level: the studies are too expensive and too big of a hassle, because there's not enough demand, because not enough people are being directed to make them, instead having their problems rounded up to e.g. obesity, because that's much easier for everyone than getting a test that's very expensive... You can see a feedback loop forming here.
This, definitely this. Though apneas aren’t a component, I have a severe neurological sleep disorder that went undiagnosed largely due to physicians not ordering a sleep study. Even a sleep generalist I saw favored assuming psychological insomnia and regurgitated behavioral advice like no screens before bed and asked if I tried melatonin. As my sleep debt piled up and my sanity diminished each day, I threw my hands in the air and checked myself into the best behavioral health hospital in the U.S. They did a sleep study and low and behold I was having 100s, sometimes 1000+ involuntary movements per night while sleeping. On the road to recovery now!