Death by a thousand cuts. Paypal also stopped refunding your fees when you refund a customer for almost any reason whatsoever.
I switched from a traditional merchant account over to a full service Paypal merchant account years ago because the Paypal fees were much more straight forward and less onerous for a smaller business such as myself.
Paypal slowly gravitating towards the torture by additional fees business model.
Ebay Managed Payments not any better (likely much worse), so you just have to swallow the pill and hope you're not just living in a simulation for the rest of your business life.