At that point wouldn’t it be easier to ask PayPal to intervene and/or chargeback through your credit card? Plus it will sting more for Airbnb which it looks like you feel they’d deserve it.
PayPal does not allow me to dispute the four individual transactions which added up to over $500, they only let me dispute the original billing agreement with AirBnb which was essentially “you agree to let AirBnb take however much money from your balance they want, whenever they want, forever, because they totes won’t abuse this feature to rob you someday months later out of the blue.” Which they did.
Anyway, seems like your real problem is leaving your money with PayPal to give away to however they see fit, instead of using a legitimate bank with credit/debit card protections.