There's an article on imore dot com which mention the dock by Insignia still working after the v5 update. Other safe option is to buy a secondary Nintendo dock and gutting it to fit in a compact dock.
I've got one which looks identical to what you listed. I've stopped using it for the fear of it potentially bricking the Switch. Upon reading up on Switch docks, the only one which is guaranteed to not brick your Switch is Nintendo's own.
Not sure about other models of Pi4 but the Pi 4 B with 8GBs OCed to 2Ghz handles PSP really great except like 1 game I found and it is playable it just looks bad lol Motor Storm Arctic something or other.