You need to keep clicking in order for the "time spent online" to be incremented - so whilst it can take a while even if you spend only an hour a day on the forum then provided that you are actively clicking on numerous topics (rather than just leaving the webpage sitting) it shouldn't even take a week to have accumulated the required time (am pretty sure it only took myself a day).
I get what you're saying, but an
hour a day just to be able to post to a forum? Not all of us have that kind of time to spend on a single website.