LeCun's arguments about why LLMs are limited seem fine to me. However his last slide is just plain wrong. He claims that "almost nothing is learned through supervision or imitation". Babies/toddlers learn almost everything by imitation, and later of course comes a lot of supervision (schools). Animals also learn through imitation and some light supervision.
https://drive.google.com/file/d/1BU5bV3X5w65DwSMapKcsr0ZvrMRU_Nbi/view?usp=drivesdk