This was the number I was remembering, which was "two to four megabits per cell zone" so definitely not _per device_ (unless you are in a lonely cell).
For Iridium (which also uses LEO satellites and spot beams), the typical cell size is tens of thousands of square miles, though!
Even if Starlink manages to provide much smaller cells (which is not trivial, especially with omnidirectional mobile devices as clients instead of phased-array dishes), we're talking several orders of magnitudes compared to a regular terrestrial cell.
https://youtu.be/F8zS2rU-URo?t=746