It’s still a good idea to use different passwords for different sites.
I highly recommend using a throwaway password for most sites.
Because many websites don’t one-way hash their passwords.
If your account is logged in on a computer, anyone who sits down at that computer can go and look up your password on their settings page.
You don’t have to manually enter anything into the form fields.
Chrome’s auto-fill is not needed; the text in the fields is populated by too many websites…. including the plaintext of the password.