I'm wondering if the cause and effect are the other way around, people that have trouble with noise (such as people with APD) might want noise cancelling headphones. The rise in cases of APD might indicate otherwise, but with the information provided, it sounds like it might be under-diagnosed anyway.
The first thing many people used to assume is that if you had any problems with listening, you might be somewhat deaf. APD and other difficulties listening definitely aren't deafness, but I wonder if there is increased awareness of other reasons why someone might have difficulty understanding speech.
I think half the reason immutable distros started being recommended to people is the fallout after LTT's Linux challenge. I noticed some people presenting immutable distros as the solution to prevent things like accidentally removing the desktop.