The criticism was something like "You have so much cash on hand but no ideas to invest in. However, you can't pay a dividend because the second you do, you're admitting you've run out of ideas and are no longer innovating".
I think that may be somewhat of an overstatement, but given news like this, Thiel's got a point? Buying back their own stock (As mentioned by another commenter in [1]) is a better investment of that cash instead of investing in newer technology? Please prove me wrong with a good counterpoint because I don't want to believe its true.
The specter of technological and scientific stagnation that Thiel/Weinstein (Right and Left wing individuals) talk about so much really scares me.
[1]: https://www.bloomberg.com/news/articles/2019-07-25/alphabet-....