They are for musicians but are fairly cheap, have a nice carry case which is very small, and let you hear what is happening without losing your shit. They are also easy to clean with hot soapy water and last so far multiple years of daily use. They don’t make you feel like you are underwater and more reduce volume than block sound, so walking around and talking to people is viable.
I think when someone is making a movie or TV show they don’t want to have anything that distracts from the story, so they only show clean lines, clear surfaces, and new enough items that their disrepair or dirtiness is not taking away from the story.
My experience was pretty poor compared to my peers, but I was actually homeless for a period so I think I was legitimately below the standard of the time. That said, rich people pay cleaners to make their house look good. They have good storage solutions, new items, and throw away and replace anything that looks bad.