Except that the UEFI spec has a shitton of bits and pieces where the filesystem metaphor falls apart on. There are attributes that determine which parts of the boot process variables are visible in, variables that should require a guid in addition to data, etc. It's an ugly, messy protocol that really does require specialty tools.
that's a pretty weak argument. fault is in the firmware, but design of thing is important. it's why ATM gives the card back before the money. they don't just tell the user to suck it up. they implement good, safe best practices.
The new Citibank ATMs that take the chip card hold onto it until after you've taken your money. I already accidentally left my card in a machine after taking the cash.
People learned the hard way what good UI was for this sort of thing -- by having bank clients complain about ATMs eating their card after they took the money and left the card in the slot.
I know, I was one of those before my bank got newer, smarter ATMs.
