No UBI proposal I'm aware of proposes UBI replaces salaries or is high enough to satisfy everyone. The "B" is for basic. Most people are not satisfied with earning a basic salary.
I was very surprised during the pandemic response to see how many people were happy to take government checks plus unemployment rather than working.
I know a few people with small businesses in various manufacturing industries. They all had a really hard time finding enough people to work while stimulus checks were going out.
People wouldn't make quite as much, but they were happy to stay home and have the basics for "free" rather than have a job.
No UBI proposal I'm aware of proposes UBI replaces salaries or is high enough to satisfy everyone. The "B" is for basic. Most people are not satisfied with earning a basic salary.