Translation: We're trying multiple predatory methods to see how far we can push PC players and figure out what we can get away with, compared to all the shit shows we successfully pulled off on our own platform.
What's wild to me is they're making their own overlay for their PC games. Ghost of Tsushima is supposed to be the first release title with it. Do they not understand steam already has an overlay? I feel like 2 overlays would just compete and be obnoxious and possibly ever impact performance.
Also, why? If it is for co-op crossplay, just make linking PSN to Steam optional, and state it is needed for inviting/grouping with any PS5 friends. Then do what every other multiplatform game does and show 2 friends list in the game.