Counterpoint: a major use case for this technology would be to experiment on human brain structures to research and hopefully cure neurological diseases like Alzheimer's. If you want to cure Alzheimer's in humans, you might as well use human brain cells from the start.
But yes, I agree that they're likely using human brain cells mainly because it's attention-getting.
But yes, I agree that they're likely using human brain cells mainly because it's attention-getting.