Does it?

I firmly believe that most problems people have with sleep also depend on modern "way of living", that is highly Artificial.

For example, lots of people have Apnea, and Apnea is highly correlated with being obese, and being obese is normal in the Western world, but it was not 100 years ago.

So it is not about being older but about being overweight, something that depends on eating healthy and exercising, that most people do not do.

Another important factor is artificial lighting, again a 100 years old thing, people that have used candles know how dim they are, and people using screens in the bedroom until late, specially social media.

Social Media is addictive, but you don't need to use it, people can stop using it, but they just don't want to.

Also living in the city is noisy, expensive and stressful. Most people are worried about lots of things, and that makes them sleep badly.