I would rather see the Fun Propulsion Labs make SceneKit and SpriteKit like tooling from Android than the pile of random libraries that they have placed in their Github.
One watches WWDC and Build game related talks, they talk about how to make games on their platforms. One watches Google IO and it is all about Play Store and Firebase integration.
Am I the only one that read the FAQ half-expecting to see some crowdsourced data mining / AI training piece along with this? Perhaps because it was released by Google and had the word "project" in the title.
I know some of the engineers on the project, and can verify that they are not doing neural nets or AI at all. Their reasons for writing this are exactly as they say publicly.
Occam's razor applies, but in terms of conspiracy tea, do you like the green kind or the transparent kind? ;-)