[2023] Why Does PSN Have Walking Dead Skins?

The console version of the game was ported by Telltale, the makers of the TWD games, so presumably that's why the console version has TWD skins. The PC version being the original wasn't made by Telltale- And The Fun Pimps have no rights over TWD content, so they can't just copy that DLC over.

Telltale went under though, so.. Tough luck in that department.