found this answer from hilariousandco
Probably not. Some people use bots or auto-refresh tools etc so it will skew their actual logged in time considerably.
I don't understand how Bots, scripts, or tools can bypass the forum's backend to tracking user's total logged-in time.
It's isn't something on the front-end that can be manipulated easily by something like inspect-elements and making the mamas proud of those who do it.