The article is actually accurate that Christianity would have more difficulty dealing with intelligent aliens than other religions. Orthodox Chrisitanity teaches that God becoming the Word Incarnate was a completely unique event. So there is the question of how other alien species attained salvation.
IMHO the answer may be that intelligent life does not exist elsewhere in the universe. When you start looking at all the conditions that have to be present to sustain higher life forms as we understand them, the odds of another intelligent civilization start dropping dramatically.
I’m still waiting though on science to explain how a self-replication life form arose spontaneously from inorganic materials.
I'm still waiting for science to get the 5-day forecast right.