Speaking of flash drives... We know that are many cursed cheap-ass USB flash drives that would just brick if you dare to write a non-FAT32 filesystem. Why? There are only guesses: buggy controller logic behaves unpredictably with non-FAT32, journaling increases unclean-unplug FTL corruption risks of already-buggy logic, etc. I wonder if anyone ever seriously engineered or reverse-engineered one of those to see what exactly went wrong in the firmware?