The article is about how Sony is reported to be making new games for the PS5 that will ONLY work on a PS5, which is a contrast to what Microsoft has already stated they are doing. Which is that their new games will continue to be compatible with current Xbox One hardware.
I think it's pretty lame for MS to be doing that, basically treating their new console like another mid-generational refresh for the foreseeable future. An Xbox One X X, if you will. That means they aren't fully committing to the new hardware and what it would enable them to do, because they still have to allow for the games to downscale to hardware that is almost a decade old. That means their SSD truly will only bring faster loading screens, since they have to continue supporting mechanical drives.