Yes, you are wrong because from the time you said you left the forum to this day. Many people have join the forum plus me and others and bitcoin has been introduced to many people in the world here and outside here. And the only thing you can says is that, the people you know as of then are not active but few. And being active in the forum is a personal decision and nobody can force another to participate or active because everyone has their offline works to do.
But some newbies left because of their intended plan to get merit is lagging.