If an extraterrestrial intelligence has reached the level of ability needed to transport large masses over vast interstellar distances, they are not lazily buzzing F/A-18s off the coast of California.
They're not coyly darting to and fro in a game with, almost exclusively American, pilots.
They're not hiding themselves from humanity, for whatever reason.
Their immense power would be like the Sun shining next to humanity's candle. They would not care, or even know to care, about how we would react to their presence.
Their interaction with Earth would be like Earth's with Mars. Sure we take steps to sterilize Mars rovers to prevent contamination but only because when we drill the hell out of that rock in broad daylight for all the Martians to see we want to make sure we only get Mars stuff.
I don't know why this is so hard for people to understand.