It's fascinating that a "think of the children" guy is now concerned that E2EE is not all that effective at thwarting adversaries (therefore, we should get rid of it), because someone could derive something from the metadata.

That *is* a problem, yes, although it is fascinating to see someone use it to argue for *worse* security.

Or we could take this as evidence that future systems need to be more metadata resistant, as some researchers, such as Sarah at Open Privacy are looking into (that is not the only system which comes to mind).