I know I risk being down voted remorselessly but I have to put this in context. Where in the real world is anonymity considered ok? If I only put a flyer through someone's letterbox here in the UK, I have to identify myself. If I sell a physical product I not only have to identify myself but take on serious legal liability. An author can take on a pseudonym but only via an identified publisher. In fact that latter ex…
You've listed commercial activities. The vast majority of non-commercial activities don't require any sort of registration or identification.
Installing an app that your friend or internet stranger developed in their spare time is not a commercial activity and people shouldn't be forced to publish their personal information in order to do so.