It’s not ideal to need a launcher
So… I guess GoG is ideal then, because you don’t need a launcher for GoG games. You download the installers and boot up the game directly. I often get Steam to launch them instead, for the controller support. The GoG launcher is strictly optional.
Good to know you can just nope the PSN login. I haaaate games requiring accounts for single-player experiences, but if you can just say no, I don’t resent them asking as much.