I would never want a staff member ordering around who isn't even active on the forums.
If it was me, I would set it to 30+, and not just 15.
The reason they do this is because members tend to leave their application super short and rushed. We will also know If the applicant is rushing by shitposting. This denotes his lack of patience and submission.
In order to become a great applicant, members should adapt with the community, not only the rules, but with the guidelines offered by many members here, including regular members.
Forum participation is a must, to be eligible to administrate on both the servers or the Discord/Forums.
If one thinks moderating a server means just to sit back and watch people break rules and you just ban them, the he/she better not apply.
Staff members have several roles assigned to them. It's not just banning, gagging, muting or kicking people in game just for their idiocy.
I also don't like staff members who stays on only one server and ignore calls just to enjoy what he's already doing.
Activity=eligibility