Sadly you cannot use an empty or non empty profile or comments as an indicator. The malware uploaders change these patterns and fake whatever they think will make them look less suspicous. Including comments made by their fake account and comments/ratings on their malware projects.
You forgot the other four games on that one account in your collection ;-)
Copy paste the username after the / to access the profile. That works for empty profiles that have not made comments, but posted games.
https://itch.io/profile/
You can do so with a bookmarklet on the account's page.
javascript: (() => {
window.location.href=`https://itch.io/profile/${window.location.hostname.split('.')[0]}`;
})();