It depends on how the UBI is financed. If it is financed through debt or simply printing new money and increasing the amount in circulation then yes, it absolu

It depends on how the UBI is financed. If it is financed through debt or simply printing new money and increasing the amount in circulation then yes, it absolutely will increase inflation. This applies to more than just a UBI though and the reason some point to the stimulus is because it was paid through debt. If there were no deficit and this UBI is paid through taxes or other direct revenue then there will likely be some inflationary forces but they should stabilize as the markets adjust. What we do instead of letting the markets stabilize is constantly increase the amount of money available so that the stabilization we're chasing is a moving target based on an increasingly more available, and less valuable, dollar.