>>15291464For a serious answer I would say it's a combinations of several factors.
Firstly, one would have to know about the show. I imagine a lots of people, especially the younger generation, may have never seen Daria. If they have seen it then they might not remember it especially alongside more popular series.
Secondly, the people who watched Daria are possibly not the sort to draw or consume pornography. Perhaps the show's message effected them or the show attracted those sorts of people in the first place. It's possible that the people who do know about Daria are just not interested in drawing porn about her or viewing porn about her.
But some porn does exist, mspaint type drawings and the first cheapest artist they could hire. The former was probably the very small crowd that knows and wants porn of Daria and decided to do it themselves but are unskilled; when they do gain skill they move on to other things. The latter wants porn of Daria but they either don't have the money or don't wish to spend excessive money on good porn so they hire cheap artists that may have never even known about Daria in the first place.
Some porn is just parody, the eroticism is there to make a larger point and focusing on it solely is not the aim. Perhaps the lack of porn in relation to the popularity the show had speaks well of the people who watched Daria.
Also, she's underage