This isn’t really an issue when your product or name not yet being well-known. But, once you gain more visibility, voting bombing becomes a problem that can easily occur on Itch.io’s rating system. There are plenty of people with enough free time to create fake accounts just to leave one-star reviews on your product, whether they dislike you personally, disagree with the themes in your game, or even if your work touches on political issues.
With the current voting system, anyone can rate your product, even if they haven’t purchased or owned it. I believe that restricting voting rights to verified owners would make the system much fairer. While this might not completely eliminate voting bombing, it would make it significantly harder to carry out.