>>113400455The fall from grace of Lisa, in terms of people hating her, can be attributed to three big things:
1. They have to push Lisa and do so HARD, because the actress who voices her only voices Lisa and due to the fact that the voice actors negotiate their salaries as a block (meaning they all get paid the same), they have to churn out 9-10 Lisa-centric episodes per season to justify paying one person as much as the other voice actors.
2. Modern Simpsons is written by Lisa fanboys who grew up seething regarding early Simpsons episodes where Lisa was treated like shit and the universe constantly shitting on her. So once they got hired by the show, they basically pushed to have Lisa always being right and winning and the entire narrative of the show bending to Lisa and Bart/Homer/etc all existing solely to suffer to prop Lisa up.
3. The few writers who fight this (and have managed to at the very least, create a canon future where Lisa is a pathetic failure who is stuck in a loveless marriage with Milhouse and has a child who hates her guts), often get overruled by the voice actress, who creates a scene every time writers don't portray Lisa as perfect.
