I can only guess but it may relate to Moxie's at times somewhat brash behavior in Github issues and an ongoing debate over centralized vs decentralized protocols (with him advocating the former). He gave a talk addressing the (de-)centralization topic at the Chaos Communications Congress in 2019:

36C3 - The ecosystem is moving | https://www.youtube.com/watch?v=Nj3YFprqAr8