TV is a stunted art form. You can understand everything by watching it on mute or by just listening to the soundtrack.
What makes TV so bad is what makes it ideal for language learning. When I taught ESL, most of the advanced students got to the higher levels by watching TV.
Today, I've been watching Dutch sitcoms. When I started learning, I couldn't find any. Today, I found two. It helps to watch obvious situations in which people talk to each other.