This is a fair point but it's not as if knowing with items are actually good is something that should only be available to power users. The real goal ought to b

This is a fair point but it's not as if knowing with items are actually good is something that should only be available to power users. The real goal ought to be: making sure your customers get access to actually good things. Not merely satisfying what might be some customers' naive intuition that things with higher average ratings are actually better. I think there's better approaches that can be taken here to address possible confusion. E.g., if the Wilson score rating ever places an item below ones with higher average rating, put a little tooltip next to that item's rating that says something like "This item has fewer reviews than ones higher up in the list." You don't need to understand the full statistical model to have the intuition that things with only a few ratings aren't as "safe".