There was an 8" one before that too.

I dunno man. A brick falling on some guy's head and making his eyes pop out seems like an excessively violent symbol.

Get with the 3.5" floppy times man!

I've seen that on some vintage software.

Graphical operating systems weren't a thing when the actually floppy discs were dominant. When icons started to be developed, the hard encased discs were the thing people were using.