He wasn’t left off the credits, he didn’t work on the show. „naughty dog“ are credited as creators of the franchise.
There is no way publishers would hand over royalties to developers, the video game industry is a cold hearted, cruel place and those companies would rather fall over and die before they do that.
Like Shigeru Miyamoto basically created everything that people love about Nintendo but he just collects a salary and he most definitely is not getting residuals for his work or any merchandise spawned his work. This is also true of any Western dev too.
There’s a certain plot point that should likely be happening in this episode so I’ll be interested to see if they actually do it this early like in the game and how people will react. (Tried to be as vague as possible with this lol)
The first. Just will be interesting to see because seems like a lot of people really like the character after the first episode.