The actual game is from like 2010. If it is in 4k its upscaled and through ps5 cloud streaming. Still very cool but the creator is being misleading by saying it's a ps5 game. The game is really good. I always wanted to play this. Lots of easter eggs and a genderbending scene. You'll see if you play, or you can look it up on RU-vid.
I own the PS4 remaster of the Deadpool game which was originally released in 2013 on the PS3. The gameplay is upscaled to 4K but I never once claimed it was a PS5 game, PS5 is in the title to inform everyone that I am playing it on the PS5 & that is how I’ve upscaled the game to 4K. You can buy the game by finding a rare copy of the disc version if you were wondering.