Only interaction i ever had with 5.25" floppy's was on technical school when we should program pre CNC machines in the mid 80ties, and before that 4 year apprenticeship was over we even got real CNC machines to deal with too.
Not that i bothered much with that was it was not something you got tested in, and i have always been more of a hands on craftsman type.
While i do recognize the sweetness of CNC machines it was never something i wanted to work with as,,,, really its not work just pushing buttons.