https://www.banking.senate.gov/imo/media/doc/5.9.19%20Facebook%20Letter.pdf
They essentially asked whether it would enable users to have privacy and would make it harder for the government to monitor every personal and financial moves of people in the US and around the world.
Though the PDF contains a bit of different set of questions, your deduction are easier to understand. I'm a crypto enthusiastic but also believes that it should have full support from the authorities. The nature of crypto that troubles our establishment should be modified for the greater good.