What if we printed the same amount and gave it directly to people? the $6T/year could yield ~$40K to each of the ~150M working-age Americans.
The biggest impact is to give employees more power in the negotiation with employers: currently, employees are far more pressed to find work than the employer needs to fill in a position (if the employee fails to pay rent, they are evicted; if an employer fails to meet a deadline, nothing happens immediately), and have the inherent disadvantage of having orders of magnitude more employees than employers.
UBI will help the public by reducing the pressure on employees to find job, thus improving the negotiation power and conditions for all other employees. Even the slight help during COVID created the best conditions for working people in decades. Seems to be worth the inflation IMO.