what if elon signs up as elon@spacex.com. he then fills out a personal details form, which includes a phone number. if a 2nd user comes around and enters the sa

what if elon signs up as elon@spacex.com. he then fills out a personal details form, which includes a phone number. if a 2nd user comes around and enters the same unconfirmed email within 48hrs he'd get to see those personal details. this surely only works in very specific situations...