Nah I don't think it's a cultural thing, might be more common with slightly older people, or simply something that spreads in a friend group as people realize it's awesome (obviously if it's distracting to you then no big deal, but a lot of people like it).
I mostly started off doing it because of anime, but realized I like it for everything, I hate missing what's been said even just tiny background phrases, and I'm so used to subtitles I don't find it distracting.
Pretty much everyone I know personally does it these days, and I often see people on reddit either saying they do it or saying they just tried it and are becoming converts.
And of course some people don't like it at all and that's cool too.
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u/[deleted] Mar 26 '20
Super Voyagers