If it does, that's be great, as I do have a PayPal account to solve a problem I had with one payment platform, but when I last looked it only offered TOTP
I just went to the bother of logging in to my PayPal, it shows only TOTP and some sort of SMS nonsense I won't touch, so, TOTP it is until either PayPal implements WebAuthn or somebody else in this space takes my business (by offering WebAuthn).