If something is my favourite song, I will listen it in the language where it is my favourite song. I generally don't have favourite songs in other languages.
I have ADHD. I struggle to concentrate on anything. I would rather have the ability to be distracted for a bit and still be able to follow the show, than have to rewind it constantly or force myself to concentrate on something (which my brain doesn't enjoy). I don't need a distraction from a boring show, I need something else to keep me engaged.
I'm not sure why you are putting infotainment youtube videos in their own category, I treat them just the same. If it has visuals that I want to see, I'll put it on my second monitor and watch it while I'm doing something else. Not while programming, because that requires its own focus, or a narrative game, but more a sandbox game like minecraft or factorio