~ I've read a lot of his stuff and don't remember the blood-drinking part?
FWIW ~ there be people aplenty who questioned their sanity about things seen and felt, some for several years until they heard or read some of David's work and realized that at the very least, the same thoughts are hitting him and many others world-wide are resonating to them ~ there be people aplenty who find affirmations in David's work of things they held inside, didn't dare speak to 'normal' people about, long before they heard of David Icke ...
~ I've read a lot of his stuff and don't remember the blood-drinking part?
Blood drinking is how the reptilians shapeshift when something enters their body or manifesting demons. It is all very scientific and not at all hard to understand.
The real world is crazier than any movie you have seen.