Tesla isn't selling FSD and claiming it already works when it doesn't. Nor is FSD the crux of their business. They've shipped hundreds of thousands of EVs and have turned quarterly profits already. Also, FSD isn't physically impossible the way Theranos' tech was.
Yeah it’s not like Tesla is giving demos of full self driving that are actually being controlled by another human behind the scenes. Being overly optimistic with timelines and lying are vastly different.