"That is to say, humanity is ordinary, cosmically speaking, just one of countless examples of extraterrestrial intelligence spread across the universe." Isn't

"That is to say, humanity is ordinary, cosmically speaking, just one of countless examples of extraterrestrial intelligence spread across the universe." Isn't humanity terrestrial by definition? At least ASFAWK we originated on this planet. We may be ordinary and just one of countless examples of intelligence spread across the universe but we're not extraterrestrial.