Whether that is “better” in this case or in general is debatable.
Note that while in general this incorrect detail “benefits the customer”, if the customer intends to
clone an effectively read-only flash drive to make a backup copy immediately after delivery, or
clone to make a backup of a read-write flash drive at any time
then having an unpredictable size could be a minor nuisance to the customer - either because the backup won’t fit or because the backup will take longer (in this case, twice as long).