I didn't know it had a name until now, but regardless of "agendas", a script that fails the test is simply not well written.
The only episode of Big Bang Theory I've ever watched in its entirety (not a fan) was the one where the guys go to Vasquez Rocks in Trek costumes. They kept cutting back to the apartment, where their girlfriends were all chatting---about the boys. They had nothing else to say, their characters had nothing to do but support the male characters. There was no story or plot in their scenes. It was horrible writing.