There was significant research done in '76 on this. It's called floobydust. It was in that year's NSC Audio and Radio handbook . It is featured prominently in latter day Dorkan Encabulators as a new form of energy. The digital version is alternately known as Kruft and serves as a topping for spaghetti code. Sometimes, floobydust is used by SW folks, but it's really a hardware thing.
I used to work in radio and TV repair shops in the 1960s. The only TV sets that came in with that much dust were from homes in which people smoked. The smoke particles added to the dust, and helped make it stickier. Most all TVs from the 1960s and later had bonded faceplates, so no dust could get between the surfaces. But it always took a lot of extra time and trouble to remove the CRT from an older TV (from the 1940s and 1950s) to clean the inside of its faceplate and the front of its CRT. I could always easily identify homes with smokers because of the sticky (and hard to clean) yellow film that covered the glass surfaces. I could never understand smoking anything, because it would be exposing our lungs to similar accumulations of dust and dirt. Ugh!
The ability to collect dust was a FEATURE! Sort of a low tech natural way to provide air quality improments. I could not help but wonder how this set was still working with the digital broadcasts? Was it connected to an adaptor? BTW, they just don't make electronics (or most things) like they used to. Can you imagine your PC running for 15 years? :)