Talking about the watchers in general: They all are of luciferian spirit. Because they teach an art/ a weapon and by mastering it, we do a step towards independancy. Independancy (from another God) is what the crooked path is about, becoming your own God, apotheosis. The watchers are luciferian teachers. They show you weapons and arts, heavenly knowledge, and teach you to use them by yourself (-> equality). That makes them different from those energy stealing Gods who want to bind you to themselves. The watcher angels technically do what the Serpent did in Genesis.
Their partners in crime are the daughters of men. It is said that women were the first taught by the watchers. No wonder, they took them wives, and the women bore them sons: To me, this is a pic of what it means to ‘pass the torch’; sharing occult knowledge so that others are able to ignite the luciferian black flame by themselves -> empowerment. Of course you cannot share occult knowledge with anybody… It is useful to study their lores.
The watchers got kicked out of heaven, because they taught heavenly arts on earth which was forbidden by a jealous God. You surely know ppl who do not like to share their knowledge, because they lose their own position and might (uniqueness, being irreplaceable). Through knowledge you gain power and even today there are ppl who dont want us to be powerful. (For example, some Christians spread around that the watcher angels raped the women.)
No matter if you believe in the old stories literally, they are definitely true one way or the other.