Honestly, as an energy worker I think most of this is fiction.
Your human, in a human body. There’s no such thing as a vampire soul, you’rea human soul, by definition.
You cannot turn into a fictional being that can’t absorb energy from far better sources than other incarnates.
In fact vampirism is a tiny subset of what’s possible in the larger subject of energy working.
And self styled “vampires” show with every overromanticised notion that they don’t understand the first thing about how any of it works.
That is my honest opinion which I expand on in my journal. It’s an unfortunate and irresponsible fad that is more likely to hurt peoe though bad energy practices than help.
If you want to do energy working, learn energy working, and you can eat shitty energy off entities including all its incompatibilities and imbalances all day… But I think no one who knows anything would want to when the realize what they’re actually doing. 