Do you really think being anonymous is to irk you? There are many things to be thoughtful about considering the monitoring of social media and just random "somaritans" with nothing to do who might report you just because.. also, mind the defamation laws that can be applied in mysterious ways. Why would someone want to take even minor risk to satisfy some dude's curiosity? Some people just prefer to be cautious especially when denied entry/ having a quarrel with an officer