Amazon, PayPal work just fine on my 3rd party 1Password extension. And it works just fine on Android as a default passkey provider as well.
I'll give it another try though. The last time was 1 year ago. I don't normally use Bitwarden so I have to set it up from scratch with vaultwarden etc.
But that's another point, I do use many OSes so being locked in to one ecosystem is not an option. I must also have the option to back up my credentials at all times (eg a cloud service will never suffice)
But yeah I should have mentioned Linux. I thought it was the norm here really especially among people advocating against corporate ecosystems.
I use Bitwarden, I use Android, I use Firefox on Linux. Passkeys work just perfectly fine on all of the sites listed here thus far.
I do believe you need Android 14 for that, though, so if your phone has been abandoned by its manufacturer/your ROM of choice, it'll break.
If Bitwarden is bugged out on your computer/phone for whatever reason, there are also alternatives like 1Password.
Is it possible now to export the passkey private key though? That was another thing at the time, apparently the fido consortium didn't want keys to be exportable.
But I'll try it again, good point. I think with paypal the issue was also that they refuse passkeys in firefox and I don't use chrome so I was stuck there too. With Amazon it tried to enroll me but I got a bunch of errors.