No. I still don’t trust you with private key material in the way you want it here, even if you could just lift %USERPROFILE%\.ssh\… and take it.

You’ll do everything you can to lock people in, making it nigh impossible to move said private key material out to another security/password manager.

The article mentions - "You can now view and delete passkeys saved for your favorite apps/websites from Windows settings" - so I am not sure how is this a lock in approach?