You can't update adult game on steam without the update go through a dlc.
And I have 0 idea how to do a DLC + putting the game on steam costs money.
It's complicated at the moment, but the more NSFW a thing is, the more likely Steam is to look sideways at it, and furry tends to get more scrutiny because it's mostly the Credit Cards being all moralistic about things. Deeper Club starts with an ass shot and then immediately draws your attention to an optional giant cock sucking up a lizard.