Yes I got that popup as well. Something like that happened to me the past week, a buyer cancelling an order, then ordering again after 3-4 days. Sadly this new policy will only apply on future cancellations.
According to my knowledge, Buyer Requests are getting replaced with the new matching feature. I know the old Buyer Request feature still exists but I don't think any real buyer uses it anymore. So its not worth it doing Buyer Requests anymore. Am I right? Can someone confirm?