Duckstation(one of the most popular PS1 Emulators) dev plans on eventually dropping Linux support due to Linux users, especially Arch Linux users.

https://reddthat.com/post/46825035

Just fork it lol
Please. Stenzek is smart but unhinged.
Fortunately, it looks like that was done already with Swanstation, which also has many more contributors.

I hate TwinAphex's guts so I won't use Retroarch/Libretro.

I got mednafen standalone for PS1.

Is TwinAphex still involved in Libretro? Can’t seem to find evidence of them from the last few years.
Daniel still has the RetroArch trademark registered in his personal name and continues to oversee the project and that's enough for me that he's still in a mangerial role, but you're right in that the last shitty thing I heard about him is fucking up netplay in 2022.