Just had a 2019 MacBook Pro 16" have its SSD die randomly. Took it to a repair shop and they said that since the internal SSD is soldered on to the logic board, there is no easy way to repair it without also getting a whole new board, so the machine is essentially completely bricked. I can't even boot it off of an external drive because Apple requires the boot volume to be the internal SSD!
I couldn't believe it was designed in such a fragile and user-hostile way. I took care of it, didn't drop it or spill anything on it, and it is bricked after just a couple of years due to a simple component failure beyond my control.