Varoufakis feels like a cousin of Harari, — both have the ability to back up their reflections with historically rich references, however Varoufakis seems to sometimes slip in a level of complexity that Harari avoids. I felt this especially in some moments where Varoufakis starts referencing past events, with somewhat of an assumption that the reader is aware of the context, and does not need explanation. On the other hand, while Harari offers a lot of historical context, I feel that he offers sufficient explanation within the book itself.
That being said, I hold Harari in high esteem, so that fact that Varoufakis made me think of Harari means that I found the book well written, and interesting. I think it's especially relevant to read in 2025, and to use as tool for reflection.