Quantum computers don't seem very useful yet, but brains are extremely useful (and they use much less power). Maybe current generation quantum computers would be better if they used quantum mechanics more similarly to the ways our brains use it. The article you linked mentions that entanglement and qubits are being "studied in human consciousness" but I'm not sure what exactly that entails.
Ass far as we understand, out brains use quantum mechanics only as much as our processors use quantum mechanics already - the world is quantum mechanical, so our brains are as well.
However, given the scale of known brain features, the temperature of the brain, and other sources of noise, it's very very very hard to imagine how the brain could be a quantum computer.
