Unfortunately it is also false (if taken out of context; Anubis rounds the time to the nearest week, which is probably good enough if the next-nearest week is valid too). Clock desync for a variety of reasons is pervasive - you can't expect the 10th percentile of your users to be accurate even to the day, and even the 25th percentile will be five minutes or so off.
I have seen some projects that require acknowledging certain politically-charged statements before they will allow you to participate, like "you must agree that sovereign country X is at war with aggressor country Y".