I simplified for the sake of the audience since it does, I’m sure you would agree, seem absurd that the current reserve requirements are near 0% which only makes my argument stronger. Technically, though the reserve requirements are still >0%. There are limits as exhibited by other required ratios that must still be preserved. But effectively with near 0% reserve, the benefits of holding deposits are only amplified.[0]
[0] https://en.wikipedia.org/wiki/Fractional-reserve_banking