In a manner, yes. Flash programming and controller tuning is done on fully assembled USB drives.
I've re-programmed a handful of flash drives of my own to mark damaged cells and in some case restore a flash storage map to return the drive to life.
Transcend has a one-click utility which does everything automagically to restore malfunctioning drives to best possible condition.
Flash controllers are much more intelligent than they look. They're almost black-magic like.
You mean they do this manually by plugging each drive? I would have thought the "bloatware" was already written on flash.