It's simpler than this. If you're watching a movie/show on a phone or laptop in a shared area, it'll probably be at low volume, so you can't hear the dialog. I'

It's simpler than this. If you're watching a movie/show on a phone or laptop in a shared area, it'll probably be at low volume, so you can't hear the dialog. I've watched entire series with CC for exactly this reason. With social media videos, CC is even more important cause nobody wants their phone making noise in public, and any wise app will mute by default anyway.