The plan with the pig was to get a similar reaction from the alien to this at 9.20
This is the phone version of the game and as you can see the devs seem to have changed parts of the ending. They even say their name when you talk to them in game.
Yeah, must have been changed when it was ported over. Rek and Dev probably wanted to make the sweater cat area more weaved into the whole game, instead of it being post ending content. I don't know why the credits were replaced with the scribbles.