Spoiler alert: it's "securities fraud", humanoid robot edition.

It is as if Elizabeth Holmes had a commercially successful product loosely related to Theranos on her résumé.

Yeah, I bought $1,000 worth of put options on spcx just to celebrate

It seems weird that he's committing a major overhaul of his product lines to a product for which he has not yet demonstrated a full prototype.

It's possible that he's got a wonderful product that he's keeping secret until he's ready to spring a million of them on the world all at once (though that does sound suspiciously like some dystopian sci-fi movies). But in the past he's had a tendency to over-promise, with some constructed demos, while this time he's not making promises beyond "it's a robot". The demos that we've seen so far have been really vague.