Do you see the difference between living off 1k a month (that's your welfare on BI) and being raised by parents making 150k+?
One's a life of poverty and misery, the other is education, opportunity, social connections, etc. People can get the former already on welfare programs. Why don't we divert that 3 trillion we'd spend on BI and spend half of it in targeted ways that actually increase opportunity?
...all of this makes it weird that the biggest proponents of UBI are ultra wealthy.
Or, in terms software engineers should understand: why a complete rewrite when there's lots of low hanging bugs that we all know about?