I think that's only part of the story. Another part is what are you caring about or doing instead. People don't have to care about those things, but what are they doing with their time instead? "Funny fails" videos and getting french fries delivered? Part of the point is that you have to do something with your time, it's just that now people spend their time doing stuff they don't care about, which is sad. You don't have to care about those particular things, but if you're not caring about anything I think it indicates something is out joint.
That's a very good point. I know quite some people that have absolutely no interests. All they do is play games all day. No a specific game that they really like, but any game that offers enough busy work to distract for a month or two. Aside from that maybe they watch some short form videos like you mentioned, when they eat their microwaved or ordered meal.
For some people now, i would be hard to summarise them. To describe them, other than 'plays games' or 'watches videos'. And you can tell something is missing, they're not happy, but distracted enough to not care.
