It's not that it's difficult to post 100 times in 90 days. It's pretty easy to do that. It's that posting 100 times in 90 days on an inactive forum doesn't really validate anything except bordem and a desire to post as much as possible to reach a number that is satisfactory for becoming a forum moderator.
If I had to guess, that would limit the priest forums to 1 or 2 candidates. Maybe... it could be 0. I don't see how anyone could have posted 100 times between now and May 11th. Nothing has happened!