It does --- if you consider that this doesn't happen on PCs, it only happened to Apple because they believe they own and control the whole software/hardware stack.
On a PC, the situation is different. At worst, with bad GPU drivers, you can still fallback to good old 640x480 VGA, or a slightly better generic unaccelerated VESA framebuffer, and be able to troubleshoot from there.
I can't think of one, so this is only a halfhearted attempt (not the GP here)... maybe he's focusing on the mismatched firmware vs. OS version and how that is more closely analogous to a bad BIOS flash?
I'm undermining my own counterargument... On a PC, a bad BIOS flash is recoverable. Some have two BIOSes - like on video cards. Some have a recovery mode via a USB stick. And attaching a programmer to the SPI flash is also a viable recovery method...
Maybe he doesn't think any of the mac firmware environment is really that different from a general purpose computer?
Ok, I don't know what the counterarguments are. ¯\_(ツ)_/¯
On a PC, the situation is different. At worst, with bad GPU drivers, you can still fallback to good old 640x480 VGA, or a slightly better generic unaccelerated VESA framebuffer, and be able to troubleshoot from there.