How many times has Elon Musk publicly stated that FSD will be here... I think that he started around 2018. He and Tesla should have been sued into the ground for that, especially as people paid a lot of money extra for it.
In this case, and having been involved in software development for most of my working life, there were many times when we had a proof of concept working. Manglement would take that as a V1.0 product, and we'd spend months rewriting the proof of concept version to make it scalable and have all the functionality that was being promised to customers. Sometimes we would make it in time for the product release, and once it was delayed by 18 months (thanks to a takeover that then cut all development). There were no lawsuits flying around, but this is Apple, so... Sue, sue and sue.