This is a pretty short critique about apparent issues with Urbit, from a non-ideological viewpoint and detached from referencing the author- though a reply points out those technical criticisms may have been inspired by ideology!
The app for example claims to be end-to-end encrypted peer to peer connections. Is this true? Is it implemented correctly? I'm not sure they could find a reputable security auditor who would willingly subject themselves to this codebase regardless of how much pay was offered.