If they claim to have multiple neuron types and brain structures, it seems that later developments could add the other key ingredients such as astrocytes and vascular tissue. Even then it may be one of those situations where there are so many just so dependencies that you don't get real brain functionality until you have just one more feature, and then one more, and so on .. .such that you might as well just skip all those steps and start with a fetus in a vat.