>Serious answer: besides the ongoing need of the 'elite' for childcare, most proponents of basic income argue that people would not just play video games all day.
Unfortunately this is not the case. What do students who live on student loans and/or parental stipend as a "basic income" do? You can expect more of that when the government becomes the parent doling out the stipend.
Students are busy - they are attending classes, doing homework and studying for tests. When they have free time, it's unsurprising that they don't have much excess mental energy or money for pursuing hobbies. And even then it seems to me that a lot of activist groups are mainly student-run. So I don't think you're right.
This really depends on the school, program, and students. I teach video game programming courses, and these seem to attract many video game addicts who can't even stop playing games during class.
And why is this bad? At least they get the fair chance to make something of themselves, regardless of their social / economic backgrounds. Too many don't get that chance.