With all respect,I think you're assuming some things. and that's understandable, given how the writer got a little too cute with the description:
'...there is an “intergalactic” battle over the history of life in the universe."
"...Also discover evidence about alien abductions and other UFO phenomena that are widely ignored by the UFO community."
I'm guessing he's talking about the battle bewteen creationism and evolution as an outgrowth of the battle betweem God and satan.
Likely. At least in large part.
The ET's , imho, in cahoots with satan, have thousands of years under their belts to perpetrate what the Bible calls a GREAT DELUSION in the end times. The ET's contend that they created man and man's religions.