What the article misses, and so do 99% of people is they ignore how vast the universe is.
To reach the NEAREST Star from earth at supersonic speeds would require a hundred generations of humans breeding inside the space capsule. That is THE nearest star in Milky way galaxy.
So this article is extrapolating our limited ability to see much more beyond than the current science is capable of. It is like extrapolating the beach sand on Australian coast by an a sand fly from beach in Florida.
It’s a great big universe
And we’re all really puny
We’re just tiny little specks
About the size of Mickey Rooney