I think that the key factor here is the access to the knowledge (science books, papers etc) and industrial capacity.

What many people fancy here based on my observation is the removal of stress to work on job with low productivity because of fear of becoming homeless and starving instead of working on some personal project that may or may not lead to success.

You write that as though its not a paradise?

It's not, at least for some of us. It sounds pretty horrible really (though better than no assistance at all). I don't know about you, but living in a dorm doesn't sound like much fun to me, depending on the exact living conditions and my neighbors. Having roommates sucks; I've done it many times, and I don't like it. Now I will say that I used to live in a dorm in college and bought out my room, and that was a nice arrangement: friends down the hall, but the room all to myself (had to share the bathroom though), plenty of activities within walking distance. But here, my neighbors were all college students, not the general population, so that probably made things more bearable. So if for some reason I can't get a good-paying job and have to live on UBI, but it lets me afford my own small dorm room all to myself, plus a meal card at the cafeteria, plus healthcare, and the neighbors are decent and I don't have to worry about getting robbed or burgled, then that actually sounds like a pretty sweet setup. Force me to live in a room with 3 other roommates, though, and I'll probably be looking at how to just camp out in a tent in a park somewhere.

Which is exactly why there is no risk of a shortage of people willing to exert themselves in order to get more than that. Lucky for them, they won't have to compete against those who don't.