We are just starting to appreciate what can be done with advancing technology. So what are we going to see of more advanced aliens, only what they want us to see, end of story and we are starting to appreciate the basis of technology by which they can actively do that.
The more advanced the less we will see, don't ever forget, their time for them to look for us, did not start with us looking for them, they will have had millions of years to look (like a child with their hands in front of the face, they can't see you because you can't see them, yep uh huh).
So what difference does it make, fuck all, we have our own lives to live and our own challenges to overcome whether they are watching or not. Given how long they had to find us, yep uh huh, we are invisible says the child with their hands over their eyes.