I like watching anime, as opposed to reading anime, and I don't know Japanese. Every dub I've watched has been fine for me, I haven't noticed it being bad. Sure, if I knew Japanese well enough to keep up with the dialog, and watched both versions, I'd probably notice a difference, but for me, it comes down to whether I want to listen to an anime in English, or read an anime in English. I also sometimes want to do something while watching anime that means I can't devote my entire time to looking at the screen, and I don't want to have to keep rewinding so I can read what I missed. With an English or dubbed show, I can do things like put it on a second monitor while I'm playing a game, but that doesn't work with a subbed show. Yes, I know the solution is just to learn Japanese, but I've always struggled with learning languages and I barely have time to watch anime these days, let alone learn another language
But... people who only speak English and no other languages watch shows and films in other languages all the time. That's what the subtitles are for. I would guess 99% of anime watchers who listen in the original audio don't know any Japanese.
I'm sorry but it's so strange to me. To me it's like putting on your favorite song, but it's in Spanish so it's dubbed by a much worse singer who sings it in English.
I also don't understand why one would watch a film or show on one screen while playing a game or something on another screen. Either the film or show is so boring and trite that you need something else to distract you - in which case why ever watch it at all? - or you're missing out by not focusing on something good.
If it's a 4-hour podcast or a random infotainment YouTube video, sure, it makes sense to put that on while playing a game or programming or whatever. But an actual polished show? I don't get it.
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
Infotainment YouTube videos, and most YouTube videos in general, are just kind of mildly interesting or mildly entertaining content. Television shows are usually things production crews have toiled away at for years to complete an artistic vision. They're very different kinds of media.
It's like going to watch The Godfather in a movie theater and you scroll HN on your tablet the whole time during it.
I have severe ADHD as well and am distracted very easily and am constantly playing content while doing other things. But there's a difference between "content" and "art".