There are many sites to put a Youtube video on repeat, plus you can block the ads so long as they're not embedded into the video itself.

Oh yes but Cindy from the coffee shop probably doesn't know this.

Usually they have a fire tv stick connected to a tv or something. So it's not like a full PC. And for sideloading something like snarttubenext you need to be pretty savvy..

Here it's really pretty common. Almost like a fad lately. It's becoming a bit boring.