According to the Daria Wiki, this chapter(Along with the once infamous "Depth Takes a Holiday" and the musical episode) was considered by the fan-base as "Off-Canon Canon" (?) because of the "treatment of reality".
Personally, I didn't have any problem with this episode, and personally I consider it to be one of the funniest moments in the entire series. It wasn't supposed to be a "realistic" episode after all, considering that it was one of Daria's dreams (And no, this wasn't some kind of lame plot twist) In that way, all the exaggeration of the usual character traits (Particularly, from Daria's parents) makes sense and is very funny to watch.
Also, all the lighthearted parodies of detective shows and movies were hilarious and well made.
Personally, I didn't have any problem with this episode, and personally I consider it to be one of the funniest moments in the entire series. It wasn't supposed to be a "realistic" episode after all, considering that it was one of Daria's dreams (And no, this wasn't some kind of lame plot twist) In that way, all the exaggeration of the usual character traits (Particularly, from Daria's parents) makes sense and is very funny to watch.
Also, all the lighthearted parodies of detective shows and movies were hilarious and well made.