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.
You can run a script that causes a headless browser repeatedly access the forum while logged in. Often the purpose of this would be to scrape information from the forum for whatever reason. I am not sure how the forum handles multiple browser tabs when counting logged in time, but it is also possible that someone would run a script(s) that access the forum via multiple browser tabs.