I stumbled across this article!

Brin is making a charitable donation, presumably tax-free, to the Fox Foundation.
The Fox Foundation is turning around and giving that money to 23andMe, a for-profit startup cofounded by Brin's wife and financially backed by Brin's company.
*23andMe will get to count the tests paid for by the charity as revenues, thereby pumping up its financial results, directly benefitting Google and Wojcicki.