@Pete2721 I'm sure all hosts agree that guests should not be allowed to leverage the threat of a bad review for money or tolerance of rule-breaking. Airbnb already has an Extortion Policy to deal with this: https://www.airbnb.com/help/article/548/airbnbs-dispute-moderation-for-reviews
Before you start lodging complaints and asking people to sign petitions, I recommend familiarizing yourself with the actual review policies, especially in light of recent changes going into effect this month. It is already the case that you can have a review removed if you can demonstrate that the guest has broken these rules.
Your proposal is not one I can get behind. You think people should be able to have 10% of their reviews removed if they're not flattering enough? If that were the case, reviews would be pointless because nobody would trust them. If you find that you're consistently being bullied by your guests, the problem probably lies not with the review system but rather a need to screen guests better and act like a boss.