Quoting from the article :
"Even if the galaxy reached its civilizational peak more than 5 billion years ago, most of the civilizations that were around then have likely self-annihilated, the researchers found ."
This certainly suggests that humans are an existential threat to life on earth, and current activities offer a solid foundation for this assessment. Based on these theories, and our current activities, we have a high probability of self annihilation. (Many of us have been in the closet on this conclusion, we just did not want to admit it for fear of being ostracized as extreme pessimists.)
Considering the ongoing anthropogenic mass extinction of life on earth, and the future impact our vastly overcrowded biosphere will ultimately suffer, it would seem that self annihilation is our ultimate destiny. But that only means we are not an outlier statistically from the rest of civilizations that arose and disappeared over the life of the galaxy.
We would not want to be an outlier on such a grand scale, would we?!