>>BrenBa+(OP)
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.