As for the article's implication that these things don't exist or are a literary device similar to the Hun in WWI, I offer the following testimonial as a differing position.
A year or so ago I had some dreams involving persons who identified themselves as ANNA-ANACHIM. I had never heard of this or this type of letering or wording. Upon further study I discovered many references to the Nephilim and Anachim. If they don't exist, then why would I have a dream about them, strongly spiritual in nature, wherein a never before named group identify themselves in the dream? Then it turns out to be the same name as these groups.
I don't know all the answers, nor do I probably need to know them, but I strongly believe the dismissal of the topic as simply imaginary to be more foolish than one who would imagine such things.
If they are imaginary, then why do independent people over history and at present report exposure to the same group under anomalous conditions?
All indicators I've seen are consistent with your synopsis.
Same thoughts here. Perhaps the fallen angels thought THEY could somehow gain salvation, by interbreeding? In light of other stupid things they have done, it wouldnt surprise me to learn they thought such nonsense.