The term has become a catch-all clickbait keyword used by shady download sites to attract traffic. When people search for a "PCSX4 compatibility list," they are really asking:
The experience wasn't without its hiccups. At first, the game seemed to stutter and lag, and Lena worried that she wouldn't be able to enjoy it. But after fiddling with the settings a bit more and ensuring her computer met the required specifications, she managed to get "Horizon Zero Dawn" up and running smoothly. pcsx4 compatibility list
The goal of the PCSX4 list is to lure users into a specific trap: The term has become a catch-all clickbait keyword