RE: Accidental Tech Podcast 592, which speculates that macOS Sequoia pre-installs the iCloud Passwords browser extension for Chrome users.

It absolutely does not.

The discussed JSON file supports the user-installable extension communicating with the OS to securely access password data. See https://developer.chrome.com/docs/extensions/develop/concepts/native-messaging

The new Passwords app does encourage Chrome and Edge users to install the extension on first launch, however. Button opens the browser to the relevant Chrome/Edge Web Store page.

Native messaging  |  Chrome for Developers

Exchange messages with native applications from your Chrome Extension.

Chrome for Developers
@rmondello What about a Firefox extension, do you know if it's anything on the works or something like that?
@manu @rmondello Yes please, Firefox support would be much appreciated!
@gregw @manu @rmondello I’ll add another vote for a Firefox extension.