Yes, power is relative. But with UBI, people gain power against corporations—because right now, corporations have massive power, and people have very little specifically due to our need to keep working in order to live.
With a genuine will-let-you-survive-indefinitely UBI, corporations lose that leverage over us.
I support a UBI that's paid for by increased taxation on the wealthy. Then it's not actually increasing the money supply, just redistributing it.
I also don't buy the argument that even with a UBI fully funded by printing more money, all the benefit would be eaten up by inflation (though certainly, much more would be than if it were paid for by increased taxation). I don't believe that's how inflation works in practice.
With a genuine will-let-you-survive-indefinitely UBI, corporations lose that leverage over us.