I am self-absorbed and devoid of empathy but it is still easy to logically deduce that other people don't want to hear my games, videos, or phone calls.

Usually they have been called out on it a time or two. They are often signaling that if you want to stop them, you'll have to use violence, and look -- no one or almost no one is willing to do that.

There are a couple of us who have actually seen someone call them out that are warning folks here what commonly happens. I saw someone get attacked with a knife, another commenter here had a gun pulled on him when they asked them to stop. It isn't about the loud music itself, it's that they're openly saying they are king shit, that no one is willing to challenge them, and broadcasting their eagerness to deliver violence upon anyone that might.

The other side of this is that they often do it on places you can't easily escape, like a train car with stops only every 5 minutes. This gives them a very long time to go to town on anyone that might challenges them. Something I've seen with my own eyes when they were asked to tone down the music.

They understand English. They just don't want to stop doing what they want to do. This is a quality that they share with everyone else on the planet by definition, but they think they're more important than other people.

There are angry people playing dominance games on one hand, and on the other people who simply don't care what anybody else wants and will do what they can get away with. There's no difference in intelligence between the two, but only the first type can actually be reasoned with. The second type will only pretend to be reasonable until the person that they're intimidated by leaves the room.

Everybody says "social cues," but as you said, the people who "don't get social cues" also don't seem to "get" direct requests or orders.