I think that basically the observer is considered "entangled" with a phenomenon after they have interacted with it. That's all.
The observer can be anything. You are you, so by the time information comes to you, you've become entangled.
I find this interpretation to be mostly wordplay. After all how can something be "real" if you can never observe it or detect it? It's sort of saying the theoretical construct "those other worlds" are real, but in what sense?
Do we ever observe or detect the larger universe outside our light cone? Yet astronomers say it exists.
What about other minds? Do you ever observer/detect someone else's experiences, thoughts, feelings? Or just their behavior from which you infer a mind?
The observer can be anything. You are you, so by the time information comes to you, you've become entangled.
I find this interpretation to be mostly wordplay. After all how can something be "real" if you can never observe it or detect it? It's sort of saying the theoretical construct "those other worlds" are real, but in what sense?
Bohmian mechanics makes way more sense to me.