I still haven’t completed researched into this so I don’t say what you’ve shown is definitely true. That article upon quick glance is very opinionated and could well be biased and untrue. But let’s assume that the Book of Enoch is dubious for now.
I have a question, if the sons of God were mere men, how were they ever able to give birth to giants? What was different about these sons of God that they could mate with women and produce offspring that was so markedly different from the rest of humanity, even though they themselves were also mere men?
I doubt there is even an answer to the above. It is simply more sensible to believe that those sons of God could not be mere men.
There is a genetic cause for giants -- gigantism. A problem with growth hormones. The heart and lungs can't keep up with the size of the person. AND some people are very large boned, very tall , muscular people. Men particularly. Though years ago, I saw a lady who was coming to a clinic to test her / Very big build.
The Old Testament called their off-spring 'men of reknown'. They were the Goliath-type of man. The Nephilin -- rebellious angels? who mated with normal women and produced the giants. How can a normal -size woman give birth to a very large baby. Women have been know to give birth to Very big babies. Some naturally and some through c-section. And , some of those women may have died in the process of giving birth.
There was a family featured some time ago on TV. They were Very tall people in that family -- a company built them an extra big house to accommodate their size. In a normal sized house, they had to bend way over to get into their front door.
And the opposite problem occurs with Small people. Dwarfism. They have to have a normal- sized house modified,