[ventana]

Xoogler here who also published things within Google repositories. This is a standard phrase that you should have in the README to get an approval to publish your repository to GitHub, even if it is totally related to the Google business (as mine were).

My guess is that it's similar to the regular "no warranty" clause in the licenses, just explicitly opting out this code from any possible agreements Google might have with its customers.

Google's process to publish to open source is well documented and this documentation is public. [1] is the document that requires this disclaimer.

[1]: https://opensource.google/documentation/reference/releasing/...

[waterTanuki]

The issue isn't lack of documentation, it's the policy itself. If it's not supported by google it shouldn't be published under their name. Simple.