But people had been using ssd for some time and the trim function had been added to the OS only more recently... (like in OSX Lion, W7) before people used it with normal writing just like the HDD... yes the performance would go worse (which a format would solve) and few of the old ones liked to die after a year or so but is that still the case?
And most new drives have the garbage collection in the drive firmware and it is done outside the OS (which wasn't case previously with SSD and they relied solely on OS). If the performance go down for some reason after a year, you can pull it out and retrim it in PC and all is like new. But it may not even come to this, depending how yamaha works with internal file system.

The links expired, can you perhaps upp them or send me pdf?