Uh....We are just a tiny backwards planet, where many of the people sit around beating on and killing each other, some eat each other and others think they're superior beings in a universe of trillions of star/planetary systems...
We don't even have the technology to even see detail on the surface of planets orbiting stars closest to us, let alone planets in other galaxies. We found a few so far, that appear would not harbor life, but we haven't started to search yet. There are millions of planets right in our own galaxy, we have not even seen yet.
In fact, we're so primitive, we can't even travel to the planet next to us....lol
We don't need to see surface detail. We need:
Stars of a certain spectral type are in the same size class. We need yellow/orange G stars, with a planet of terrestrial size inside the circumstellar habitable zone (about 90 +/- 10 million miles).
The last two are hard with our present technology, because the radial velocities of the planet's "pull" on the star are much lower for a planet about the mass of the Earth and about the distance. But eventually (perhaps with the satellite in the original poster's article) we will be able to determine if such planets exist within so many light years of Earth. Then, we can work on looking farther out.
But I believe the result will be negative.