Valve should have a policy of blacklisting developers when it's found that they've used stolen assets, as a deterrent. If it's known that the consequences of using stolen assets are harsh, the fewer people would try to get away with it. Most games that use stolen assets seem to be removed sooner or later, but quite a few developers seem to have been able to just release another game on steam after that.

As for asset flips, those are a bit harder to get rid of, as they're not actually doing anything illegal, but if people like TB or Jim Sterling are to be believed, Valve actually requires a game to work in order for it to be on steam (they do put up the games without checking though, and lets the community do the reporting), and things like not being able to exit the game properly counts as the game not working (and several asset flip games have had issues with that. Early access seem to be a way to dodge that requirement though.

The game has a rather interesting ending, which is the best (and probably the most original part) of the game.
And I don't understand how they were able to find a publisher for it. Apart from the stolen assets, which I can understand if the publisher failed to spot, the game is just not worth playing. The main character moves in slow-mo, the puzzles make no sense and the game is borderline offensive at some points. A game that bad leaves a bad mark on any publishers reputation. And yes, I do own the game (picked it up right before the recall order came and some stores were trying unload it as soon as possible).