There should be zero stars available for scamsters. Seriously this should be an option. Why should anyone give one star to a scamming firm Robbing Hood which has colluded with their backer Citadel. They have derogatory term for Retail Investors - Dumb Money. Now the 'Dumb Money' has figured out the the hedge funds'rigged game.
Visually, allowing 1 to 5 stars inflates the way ratings look, because the first star is always present, even for the worst products.
Imagine if it was pie chart or a bar chart: the lowest rating would look like 20%, not 0%.
Or imagine a product where 50% of people gave it the lowest rating (1 star) and the rest gave it the highest rating (5 stars). This would be presented as a 3/5 star item, which visually appears quite a bit better than its real rating (50%).