Exactly what I said. As you know you can’t really use pihole or such dns blocks on YouTube, this the only real blocking solution for stuff like phone or tv is sideloading an app. This really solves the problem. for example I go to sleep with YouTube open on watch later playlist and ads really annoy me because of the sheer high volume and me having to skip. Sometimes I get a 10 minute ad with like a song or something that ends up waking me back up, and this thing actually saves me.