There's a very slim chance something happens to Biden (or he steps down to let kamala be pres for a day) next January, Trump is sworn in and then ousted and we get our very own 4 empowers in one year.
Plus it would be hilarious if going forward the numbering of president's was fucked up because one person was pres for one day in a purely symbolic gesture half the country refuses to acknowledge and half the country decides is incredibly important.