What PayPal is offering is not even close to what BitPay is doing. On PayPal you will only be able to use cryptocurrency that you bought from PayPal, you cannot

What PayPal is offering is not even close to what BitPay is doing. On PayPal you will only be able to use cryptocurrency that you bought from PayPal, you cannot transfer cryptocurrency in or out of your account. All you can do is buy cryptocurrency from PayPal and then sell it back to them at a later time.