Once the prophesy is fulfilled
"Marge becomes a robot,
Maybe Moe gets a cell phone, has Bart ever owned a bear? Or, how 'bout a crazy wedding?"
Moe obviously owns a cellphone like everyone else nowadays, there's been plenty of crazy weddings, in a tree house arty made robots of marge but the prophesy is specifically "becomes a robot" not just there being marge bots but there is a fantasy sequence about her becoming a terminator but I don't know if that counts either. If julie kavner gets replaced with AI that will totally count towards the prophesy. Bart just hasnt owned a bear, he's interacted with plenty but never has a plain pet bear.