As a reminder, the PlayStation Portal, or Project Q, is (according to leaks) based on Android. It doesn't run the games itself, it merely streams them from your PS5 and your handheld then serves as a controller with its own display.
I'm wondering why anyone would prefer that over simply using a regular Android phone with a good controller and the PS Remote Play app?
Well, I'm sure it's good enough by the time they slap their own drivers in there. It's just streaming. I'd imagine literal wifi being the bigger culprit of any slowness. And android is already there so it's easier to build off that than make your own thing, especially when it's doomed to fail anyway 😂