I vastly prefer the explanation like of Roadside Picnic. They didn't try to create us, they don't care that we're here, and, ultimately, we will never be able to know them in any meaningful sense. ;)
Or another take, life isn't all that special if we can make it this easily.
We have always theorized the start of life but this could actively show that life could have started on a rock floating in space given enough time. No sky daddy and no aliens necessary!