Many sites offering "free logins" are actually hubs for malware, phishing scams, or aggressive advertising. Their goal isn't to give you access, but to get you to click on links that could compromise your own device.
A password manager is arguably the single most effective tool for protecting online accounts: reallifecam email and password top
This is not a victimless act. The website loses revenue, true, but more critically — accessing someone’s paid account without authorization violates the in the U.S. and similar laws worldwide. Many sites offering "free logins" are actually hubs