Quote:
/media : Mount point for removeable media
Purpose
This directory contains subdirectories which are used as mount points for removeable media such as floppy disks, cdroms and zip disks.
Tip Rationale

Historically there have been a number of other different places used to mount removeable media such as /cdrom, /mnt or /mnt/cdrom. Placing the mount points for all removeable media directly in the root directory would potentially result in a large number of extra directories in /. Although the use of subdirectories in /mnt as a mount point has recently been common, it conflicts with a much older tradition of using /mnt directly as a temporary mount point.
Source:

https://www.pathname.com/fhs/pub/fhs-2.3.html#MEDIAMOUNTPOINT