Dude what are you even arguing. On the XSX you need to have the games suspended to be able to switch between them. On the PS5, assuming we are understanding this correctly, you could do the same thing regardless of whether the game is suspended or not. Period. Also, because the game doesn't need to be suspended, it is not limited to 4 or 5 games, but can be done with whatever games are active on your SSD.
Isn't this essentially six of one, half a dozen of the other? Well, I mean, anything that is on the SSD can be accessed thus, which is going to be a limited number anyway (unless you have lots and lots of smaller titles).