An interesting idea, but don't we have enough paranoia already?

An interesting idea, but don't we have enough paranoia already?
https://curiosity.com/topics/the-zoo-hypothesis-says-aliens-are-secretly-studying-life-on-earth-from-afar-curiosity/?utm_source=facebookSCAL&utm_campaign=2016q4xxfbk03SCALzoohyp&utm_medium=social