Seems like Numenta is out of ideas about how the brain works. What happened to them? In this work they simply took a standard neural network, sparsified weight

Seems like Numenta is out of ideas about how the brain works. What happened to them? In this work they simply took a standard neural network, sparsified weights and activations, trained it with standard gradient descent and backpropagation, and called it a day. This would have been unthinkable 10 years ago when they were after biological plausibility of their algorithms.