There is absolutely nothing wrong with floppy disks, as long as a) you have readers and writers on both sides, b) your data fits on them, and c) you can get replacements for the foreseeable future. The point is having a process that works. Just because they don't work for most use cases doesn't mean everyone should switch away from use cases which they do address, at a potentially high cost.
The failure rate of floppy disks (or rather, the incidents of uncorrectable bad sectors) is dramatically higher than newer media like flash thumbdrives.
