IIRC, they do work, but it's difficult to insert disks, because the cases on machines that came with auto-inject drives lack the cutout around the disk slot that allows you to push the disk in far enough to load into a manual-inject drive.
The slots are a slightly different height, but you can shim them up a little at the front. You need to use something to poke them in, like a second disk.
https://www.siber-sonic.com/mac/superfloppy.html has some information, including tests with a couple of different drive models