I agree, it is very unlikely. But possible, I don't use "very unlikely" to allow myself confirmation bias when confronted with new information.
The thing about it is, it is SO dependent on how long intelligent life has had to evolve before reaching the point in technology/understanding where they can hit that exponential increase in capabilities that we have. The stars didn't all form at the same time, and neither did the planets. If some roughly equivalent planet to Earth, with the same sort of evolutionary path leading to a species intelligent enough to do what we're doing, happened to form a billion years earlier, then it could be that a billion years ago, some species set out into space, and/or began looking/listening for someone else. They very likely wouldn't exist anymore... a billion years is a LONG time, But they might have been the first. But what about even older planets around older stars? Or what about a planet that didn't have repeated mass extinction events, but was the same age as Earth... perhaps their intelligent species reached where we are 100 million years earlier or something.
I have a hard time with the idea that we and Earth are really that special in any way, among the unfathomable reaches of the universe. Us, the first? Maybe, but it seems like a vanishingly small possibility. It's much more likely that we seem alone because all we have REALLY seen is the planets of our solar system, and we have vaguely seen that other rocky worlds exist in their stars' Goldilocks (habitable) zones, in stars close to us, in our galactic neighborhood. So we have been able to observe 0.0000000(repeat zeroes for a long time)00.1% of the universe. And we would have only been able to pick up and hear signals that happened to be within about 60 light years from here so far, and like I said in my previous post, if we were hoping our signals would be answered, the receiver who sent them back would have had to have been 30 light years away at most (30 there + 30 back = 60 years). For all we know, some advanced civilization heard our signal yesterday and is like OMG, aliens!! They're real! And they sent it back, but it won't be until 2083 that we would receive it.
Or, it's also a possibility some intelligent race got our signal and didn't reply, but knows we're here and is coming to do... something. Could be very bad, could be good. But, let me emphasize that I think this is very unlikely. I am just outlining possibilities that are real.
Our galaxy is 105,700 light years across. Our signals have made it 0.00057% of the way across our galaxy since we set up SETI. Frankly, we have no fucking idea what's out there, or who.
Yeah, at least 125 BILLION other galaxies... but they believe the number will rise to around 200 billion with James webb's observations.