There are a lot of assumptions underlying the Fermi paradox. It only needs one assumption to be wrong and the paradox falls. For example, the mediocrity principle - which is disputed.
Surely we are normal, and special, simply because we are us? Elsewhere there is not us, and that is normal too. We can't rule out a possibility that life exists elsewhere, but we have no way of estimating what the probability is until we have some evidence. We're not evidence because we're us.
All joking aside...I had not seen this and I wonder if there was any follow up? (more info)
The longest range signals sent from the Earth (VHF TV) are unlikely to be detectable beyond 100 LY. Modern digital signals won't make it more than a few LY ....
Think of the impact of knowing either..
A.There is nothing else..just us.
B.There is other life..
Can "A" ever be answered without "B" ?
Assuming the universe is infinite<<<it might not be..then we could only say well there is nothing everywhere we have observed or visited.
Here is a thought...if advanced aliens were sending out messages using quantum entanglement would we know about it? Would an advanced race use a communication that was limited to the speed of light over vast distances?
Cavemen listening for a shout across the valley..with no radio reciever?
The universe should be teaming with messages...so why isn't it?
Even if the messages were the low tech kind before they advanced..
So what does it mean if there is only us? Is it impossible to advance beyond a technological point..ie can we know all there is to know?