Stuff happens Mom. Myself, I've found myself in trouble here without seeing it before I stepped in it --- uhmmm --- well, enough.So again I apologize and I am gonna be doing alot of thinking about still being here. I feel bad that happened
So. To your original question. I think the picture's were proven a hoax. It is not so unusual that 'professionals' pull this stuff for a variety of reason's -- mostly either money or attention.
As to the Nephalim's. And as ever this is my opinion.
Yes. I believe they were real. I'm not saying that lightly, nor is biblical text my only research. However, from what I can glean... The Watcher's or Guardian's, who are not The Fallen, are those who mated with human women, so... The Watcher's and Human women would be the progenitor's of The Nephalim. The word 'giant' actually refers to 'intellect' not size. The Nephalim were born far more advanced intellectually then human's were at that time -- due to the fact that their father's were a higher/more advanced Being. In this thing, they began to enslave humanity for their own needs... when this had gone on for some long time, an Archangel witnessed the perversion and reported it to God... Archangel Michael was put in charge of straightening the madness out -- and He ordered the Deluge... making sure as many of The Children of Earth were safe as possible before it came. The Watcher's/Guardians took off to wherever (left Earth) and left their offspring behind... on purpose. And the Nephalim were eliminated to the last one.
You can find this story or a similar one, in every ancient cosmology we have access to. The name's may not be the same, with some being called God's, or Demigods, other's Angels, and still other's Star Lords... but the story IS the same. Try Sumerian, Egyptian, Mesopotamian, Babylonian, and even Hopi and other Native American Cosmologies... to find correlating mythologies.