If you accepted the new Terms of Service recently, then you agreed to pay guests' relocation costs in the case of a "travel issue".
https://www.airbnb.com/help/article/2868/rebooking-and-refund-policy#:~:text=4.2%20If%20you%20are%20...
4.2 If you are a Host, and if (i) Airbnb determines that a Guest has suffered a Travel Issue related to an Accommodation listed by you and (ii) Airbnb either reimburses that Guest (up to their Total Fees) or provides an alternative Accommodation to the Guest, you agree to reimburse Airbnb up to the amount paid by Airbnb within 30 days of Airbnb’s request.
Is there a cap on this?
What happens if a guest makes a claim (especially a false one) on Christmas Day and the only suite available in town is $1000 a night? We get to pay?