Seems like an interesting chap, across diverse areas like Covid conspiracy theories (associations with RFK Jr), China (supporting communist party position on Uyghurs) and Ukraine.
On Ukraine "
In March 2023, a group of 340 economists published an open letter to "address some of the historical misrepresentations and logical fallacies" that they said were contained in Sach's arguments regarding the Russo-Ukrainian war."
So in a small minority and associated with fringe positions on many issues.
I think I'd take with a large grain of salt.
en.wikipedia.org