I think it's the fact that Musk has been promising fully autonomous driving every year since 2016. Not like 3-5 years away, every year he says this is gonna be the year. I'm not knocking the stuff they've actually done, but Musk's mouth frequently writes checks his body can't cash.

When Musk makes a claim, pay attention to the time horizon. If it's something that can be fully delivered in under 6 months, then they can probably do it. If it's something where the end product will take longer than that, take his prognostications with a huge grain of salt.