A rather useful manager which spoofs all user data, thus increasing privacy. Due to the fact that Xposed, or take that VirtualXposed, has a huge number of permissions, some of which can be detrimental to privacy. However, it is worth clarifying that XPrivacyLua has some proprietary components, some of which the developer has already mentioned. Especially when you consider that it is made by the developer who created FairMail. I wouldn't trust the developer, in privacy.
The downgrade, not to whoever uploaded this to the exchanger, but to the developer.