It'd be impressive if your nephew performed this at his thirteenth birthday party after becoming obsessed with Carlin.
Given modern generative large language models are still about a decade away from a thirteenth birthday, this is pretty impressive then.
Does anyone remember the Seinfeld AI generation in 2022?
Do we really think this tech is going to stop here and not improve at all after such rapid growth in the past two years?
By the time of its thirteenth birthday I suspect it's going to have gotten much better at writing jokes.