That's the risk of any series, whose star gets a dream sequence where they play the role of... the role the same actor played in a tv show from 30 years earlier.
It's a homage to fans, but has to be cleverly done if new audiences are going to take an interest.
One has to wonder if they would have done a flashback dream for Katey Sagal (Married with Children, Futurama)... A Futurama nightmare might be rather fun, though a MWC dream would be more instantly recognized, which is essential when aiming at mass audiences. It's always best to know the material being parodied. :)