This was a long but very interesting article. The giants of the Soloman islands are an interesting mystery. I have always considered the aliens and giants to be connected to the bible stories of fallen angels.
Genesis 6:4, which states: The Nephilim were on the earth in those days—and also afterward—when the sons of God went in to the daughters of humans, who bore children to them. These were the heroes that were of old, warriors of renown.
It would not surprise me if there is a connection. We call things by different names, but the entities are still what they are. If these aliens, interdimensional or whatever you want to call them are actually fallen angels they probably hate us. Their pogeny, the giants may still survive and live underground, showing themselves as what we consider cryptids on occasion.