I think that underestimates the difference between handling tech that need to keep people alive and restoring a computer that sits in a basement and is not expected to do anything more than provide cool entertainment.
Going through testing, certification, documentation and training for a USB adapter would cost millions, even if the piece was available off the shelf for 50 bucks.
The floppy is just the funny visible part of the issue, the core issue is that their whole stack has seen the dinosaurs roam free.