Yes paypal use crypto but instead of eth many users was expecting the TRON blockchain its faster cheaper and more used.
Eth transactions still too expensive i hope they start use TRON soon
Paypal is certainly aware that crypto users continue to increase and difficult to stop, this can be seen from the very large transaction volume so that makes Paypal have to follow the trends that occur, and of course Paypal chooses the ERC20 network because it is most popular even though it is more expensive than the Tron network.