[madjam002]

I'm guessing they meant because malware can now run commands as root without prompting for a password, however I'd argue that if you have malware running as your user in the first place then that will likely be more damaging to you than it getting root and modifying your system, as it will be able to access browser session cookies, personal documents, etc.

Personally I don't have passwordless sudo but I'm also curious as to what the attack vector might be here if you were to enable it.