Recently some spinoff/copycat groups have also sprouted up. There’s a “Dull Men’s Forum”, and a “Dull Men’s Fun Club”, for example, which post similar memes. And a “Dull Women’s Club” as well (even though I also often see women posting in the Dull Men’s Club, I suppose women on average have different sensibilities about where to draw the line between dull and interesting).

I view this as a sign that the group has become too popular and lots its “edge” (which in this case was its authentic dullness), and now is just a place for farming likes and impressions from the broader FB community. A lot of it is quite derivative of other popular posts - “what is the purpose of this thing I found in my hotel/new house/grandma’s house” posts seems to be a really common theme, for example.