> I don't think fuzzing will take something with a score of 1 and show it as 0.

If one or more people decided to mass downvote new submissions (which isn't exactly uncommon), or the submissions are controversial, they will show as 0 even if they're actually -/+ 2 (for example).

If you decided to mass upvote them you will initially see the total increment by one, however, subsequent refreshes will show you fuzzed numbers. I believe the more active you are (e.g., upvoting 30 posts in the span of a minute), the more aggressive the fuzziness will be.