Well the "shit" one is a combination of frame by frame animation and rigged while the priest is purely rigged. While I think this game has gone down the shitter as well, the comparison between the two is unfair. If anything I would compare the abomination to fem ricardo's dance which is also a frame by frame.
The issue is that it's way too fluid compared to the other scenes and it doesn't fit the asthetic that the game is going for as the lines are both way too thick and in general, way too clean and the head that's clearly a layer behind the animation in a different style isn't doing it any favors
They look nothing alike at all? I've been following kyosuke fujiwara for a while and it's extremely unlikely they have any association with this game, and even if they did, their animations look nothing like what you see in this game