With neither real facts nor justification of any assumptions of the frequency of life, multicellular life, intelligent life, technological life, stupid-enough-to-give-itself-away life, this article starts off on the wrong foot and gets worse. It doesn't matter how many exoplanets you can find, one, ten, hundreds, millions, billions, trillions - finding life on those planets is a completely different step. Finding life on a planet that has is not trying to be found is not likely to be possible, and this opens a problem that is beyond simple epistemology.
As others and famously, Stephen Hawking, has pointed out, an intelligent life form on an exoplanet should be aware of the risk contacting ET should entail. It's a simple matter of weighing risk and reward - and so far, Homo Sapiens has failed to figure that out. We're still stupid enough to be sending physical artifacts far away from our planet with a map that effectively says "We're curious and stupid - please invite us to dinner" without distinguishing the difference in role of dinner guest and entree.
Fortunately, sending physical artifacts is one the least effectual ways to contact ET. Sending electromagnetic signals is far more effective, and humans have tried that too, but only for a short time and only in a few directions. Beyond our early transmissions of "I Love Lucy," the increasing complexity of our signals make it less likely that modern communication, if were somehow intercepted with adequate S/N ratio, would be decoded into anything useful to ET. In fact, those DirecTV signals mean almost nothing without a access card, by design. Unless we actually intend to send a signal, nothing from Earth is likely to give our presence away, short of a few hundred short bursts of nuclear radiation from our atomic and fusion weapons, which we can only hope have ceased to be transmitted.
The simple fact is: "Space is big. Really big. You just won't believe how vastly, hugely, mind-bogglingly big it is. I mean, you may think it's a long way down the road to the chemist's, but that's just peanuts to space." Plausably, Homo Sapiens has got to figure out how to deal with the "terrible ghastly silence" of space with much greater probability than having to deal with ET. Even so, contact with ET is much more likely to be via long-distance (and therefore long-latency) communication than by physical contact. And if a religious person doesn't like what ET is saying, they'll just change the channel, or stop responding.
Historically, religion has adapted to scientific advances without just giving up and saying - OK, we were wrong. Religions have been very facile in their interpretation of sacred documents in order for their memes to continue to flourish despite scientific and logical contradiction. Indeed, with Socrates as the example, the risk is borne by the truth-tellers, not the religious followers....unless one can surmise how religious orthodoxy would drink the hemlock this time.