This is not accurate. The very first sentence of that issue is:

> Passkeys should never be allowed to be exported in clear text.

and from another comment by the issue creator:

> I don't quite understand why requiring file protection/encryption can't be a temporary minimum bar here.

They're arguing for storing them in encrypted form. That's very much a different argument than arguing against exporting. I'm not taking any sides here, I just think it's bad to so badly misrepresent people's standpoints.