I think this reflects my tendency to see humor often in the Bergsonian/Foucaultian lens of laughter as a form of social discipline, but I kind of see Tina’s sexuality coded as excessive. While not as active or dangerous as other television women of excessive sexuality, her proclivities seem to me funny precisely because we recognize them as weird. In that sense, her enjoyment of 60 Minutes fanfic is a satire and othering of the of slashy fanfic’s queerness. If memory serves, her crush on Jimmy Jr., while awkward, is perhaps the one treated as the most “natural” by the show and it is probably no coincidence that this is her crush that is the most normative of her love interests.

That said, I don’t think that any of this hurts your argument. I don’t think this is an either/or situation since humor as a rhetoric seems to gloss over internal contradictions better than others. The family’s – and probably Bob most specifically – are the audience surrogates in the show and while the discomfort they feel regarding her sexuality marks it as odd, they accept it. But the way an audience member metabolizes these mixed messages could obviously favor one side more than the other.