>so they can't hide malware in the same way that the firmware of USB drives, hard drives, and optical drives can.

There's a reasonable chance that many of these floppy drives are USB devices, so they'll have all of the disadvantages that come with USB drives.

Another approach could be to build a device that sits between a host and a USB drive and verifies that only mass storage operations take place, which should stop some of the badUSB attacks.