Only the 3G models support the PSVSD. You do have to fiddle with the drive setup, some of the adapters don't work with some FW versions, etc. It's just more of a pain IMO than dropping ROMs on an SD card like other handhelds.
Yeah but it's a 30+ step process to even to be able to use the sd2vita and emulators. Modern retro handhelds have an ease of use convenience factor. Proper SD card support, USB C charging, TV out, literally drag and drop ROMs, etc.
This is very true, modding any console can be quite the effort and a huge challenge for non technical people.
To get the mod working I had to compile the software for macOS 10.13 as some libusb function wasn’t working correctly and wouldn’t inject the payload to the vita. This was well out of my comfort zone.