Wrong.
If your "SSD" gets borked/replaced, There's An App For That(sm) !
The only "penalty" is that it has to Run on a Second Mac
Oh how little you know and how incapable of actually analyzing the reality of the situation you are. NAND chips aren't just a simple tabula rasa that you just write raw data to like flash memory is. NAND chips are more complicated in order to allow for fast random rw access, and they too require firmware to operate. Where do you think this is stored?
The boot ROM, right? ... Wrong. LLB perhaps? (Oh by the way, this part of the firmware is on flash storage. You know, the kind that you described as "dumbass" earlier) Also wrong.
It's on the dead NAND chip. So what do you think happens with your so called app (DFU) when it can't communicate with functional but otherwise inaccessible NAND chips? Basically this:
https://youtu.be/yR7m4aUxHcM?s...
You see, that tool isn't meant to fix a dead SSD. It's meant for fixing a corrupted third-stage firmware update. It assumes there's a working SSD with NAND chips that have been blessed by apple with the right (or at least, compatible) firmware. Can you fix it? Yeah, with a second mac. Only that mac will be an ex-mac afterwards. In either case, you know how you keep talking about time machine backups while also talking about what happens in the case of a dead SSD? Care to guess why I told you that it's irrelevant?
All it takes is one bad ten cent buck converter to permanently brick your mac. Or, simply having too many chrome tabs is enough:
https://youtu.be/MZuv4TIjk-I?s...