Ignoring the magical thinking aspect of this (where will this money come from), this assumes that people will still want to work after receiving basic income.

This also has the inflationary consequences that I mentioned in another comment: you're effectively increasing wages without increasing productivity. This will cause prices to rise because employers will face higher taxes so that the state can support basic income, and demand will rise because people will have more money.

This will cause inflation, and in the long run purchase power will not increase, while society will be worse off with less people doing productive work.

Do you really think most people would prefer being poor to working and thus not being poor? Look at all the lengths people will go to to get money. Most people really, really, really like having money, and that doesn't stop just because they get a little bit of it.

Sure, some people won't work. But most of those would be people who either would have a hard time finding work, or who have some specific other thing they'd rather be doing.

Some people are not going to extra lengths to get more money now. Those people might be happy with their current income, however low it is. These people will prefer to stop working.

You are also confusing money with wealth. Basic income may give people more of the first, but its inflationary nature does nothing for the second.