Neither the comic, nor the subsequent tweets, acknowledge that the painting was slashed several times with a blade - something that causes far more damage than mere spray paint.
Even the language seems designed to play this stunt off as harmless. "Bart Simpsoning" - equating it to the actions of a mischievous but ultimately lovable child. But even Bart (at least in the early seasons) had a strict limit to his wrongdoings. In Season 1,
an entire episode's plot centered around him being genuinely remorseful for the damage that he did to the city founder's statue.
We're long past the point where
The Simpsons could be considered a depiction of an average American dysfunctional family. Nowadays, it's positively
aspirational.