While we contemplate with doubt the possibility that aliens might be observing us, eluding us, and not contacting us, we are doing much the same thing to tribes in South America's rainforests.
Look at these guys peering at the airplane, wondering "what the hell is that?"
The researcher in the video says we should leave them the decision about whether or not to contact us. Consider the ridiculousness of that statement. How can they ever make an educated decision about whether or not to contact us?