As a PC gamer I always find these spec releases kind of funny. An SSD? Welcome to 2012.
Considering the prohibitive cost of SSDs back then, it shouldn't come as a surprise they were not used in the current gen of consoles, which were released in 2013. A seven-year lifespan usually results in the technology becoming pretty much obsolete within a few years, especially compared to gaming PCs which are customizable across the board (no pun intended). Consoles are relatively restricted by comparison. Although, upgrading to a SSD in a PS4 or Xbox One has been possible since their respective launches.