Deka, who makes like 1/3 of his content about fart, piss and scat, gave off this game to his friends and advertised it to his community. The community has a lot of people who like these fetishes, because that's what Deka makes. So people vote for toilet stuff, because they like it.
What devs should do is to implement a on/off toggles for heavy fetishes, so you won't see stuff you don't want to see.
But crying that game goes downhill because public poll winner is going to be a fetish you don't like is dumb.