it's an interesting idea for sure but there's always been a plethora of homebrew emulators for the PSP. do they not work well anymore? Or does the Pi just have more modern emulator options?
Pi Zero has an order of magnitude extra memory and 3 times the CPU frequency. Likely to be enough, if emulator overhead doesn't compensate for it, although I think it could. In that case, the Pi Zero 2 W ought to be enough, as its processor is leaps and bounds better.
Crazy times we live in :)