Source? If anything, the substitution effect is much stronger than the income effect. People will still work because work gives you purpose, engages you with people around you and can even be fun. They might do work that would go unpaid today.
Subsidizing people into unprofitable civil service is in my opinion less dignified and more paternalizing than just giving them money and telling them to do what they want to do. UBI means you don't have to prove your worthiness of existence through wage slavery. If resources should be tied to productivity, maybe we should start with the people who grew up with trust funds.
You base your assumption on your very smart and educated friends. Unfortunately, smart and drive people are a tiny minority in the world. You cannot make policy based on how the top 10 would react
Subsidizing people into unprofitable civil service is in my opinion less dignified and more paternalizing than just giving them money and telling them to do what they want to do. UBI means you don't have to prove your worthiness of existence through wage slavery. If resources should be tied to productivity, maybe we should start with the people who grew up with trust funds.