Hey if you want some curated content you can always check GOG or any other store.
Not all stores, specially in an open platform, should be curated.
Not everybody shares the same values and if it's legal, somebody might find that game fun.
If you get upset by content like it, I think you might be the problem but is ok because there are other stores for you.
Steam appeal to the user to have some criteria and the power of choice, the same of any other medium.
Steam has tools to filter content, next time use them.
Thanks to give exposition to those trash games, OP. We could never find them.