Sounds to me like they put defective rev of a USB3 host controller on the board, and they need their own driver to work around it, but the host controller is going to identify itself generically enough that Samsung can't rely on PNP ID matching to pick their work-around driver. Hence they disable windows update to avoid getting a driver update that would stomp their workaround driver.
It's because we don't do recalls on computers...and we should.
Faulty hardware like this goes out _all the time_. Eons ago when I sold computers, HP had a line of high end laptops (~$3500) with 2 slots for RAM (back when that was a big deal in a laptop...) and we found out that the second RAM slot's pins were not connected to anything on the motherboard. On every single laptop we opened (30+). Literally they had just pins on a board with no traces and advertised it as a 2-slot laptop.
HP stonewalled us (Circuit City flagship store, so we had corporate involved) and kept trying to get us to sign an NDA before they would confirm the problem or offer a solution. We said fuck that and shipped several thousand of the things (the chain's entire order) back to them as defective.
They caved, like they should have, but complained about it the entire time.
Whatever it is, it sounds really sketchy.