I use passkeys. I save them in the Apple cloud. They work on all my apple devices seamlessly. I don't need to copy them. Ecosystems are nice.

And what happens when Apple permabans your account for buying a gift card? https://news.ycombinator.com/item?id=46297336

I use passwords. I save them in iCloud. Or Bitwarden. Or Chrome/Firefox. Or Lastpass. Or 1password.

They work on all my (not just Apple) devices seamlessly.

I don’t need to copy them.

Non walled ecosystems are nice.