you can make it so individual games don't impact your recommendeds, one way is to go to the store page of the game and click ignore. another is to find the section on the store page named "recommended based on the games you play" and clicking the "explore and customize" button to the right of it.
Edit: apparently you can also find the latter menu by clicking "recommendations" in the top bar of the store and then "interactive recommender".


that's a cool likeness, never thought of it that way. Would be really cool if it worked like that. Or, well, it would probably get exploited by corporations so you'd just spend all your time off filling your metalmind so maybe it wouldn't be that cool actually.