So the google is trying to develop smart speakers, using a wine-wheel of largely subjective terms. That's great.
Most of the terms on that wheel thingy look like they're reducible to well established, measurable aspects that non-googly speaker designers already rely on, e.g. freq response, power response, absence of resonances, distortion levels, dynamic range capability, etc.
Their definition of "naturalness" lands them smack into what Toole called the circle of confusion. Interesting side discussion b/t lovin and Ren seems to also concern the production quality, rather than speaker design. It's too bad that the default preference isn't for recordings to be released with greater dynamic range and more lifelike tonal balance, letting the consumer apply compression as needed (for earbuds, car audio, smart speakers of modest capability). Some bad recordings can be fixed (kinda, sorta) using editing software. Audacity may be able to fix things that Ren mentions at that level, rather than via extra hardware downstream.
Now if google can come up with the performance of the Dutch&Dutch 8c for a tiny fraction of the cost, that would be interesting, but if they're just after plastic, mono smart speakers with thick bass? Meh.