Who had read the Sekret Machines books, and what did you think of the theories in them on the Phenomenon?

I am done the first two non-fiction books of that trilogy, soon to start War, the third one. I have almost finished the 2nd book in the fiction series. There are a lot of theories associated with this approach. There is too much to summarize here. Who has read them, and what did you think? I am interested to hear what aspects stood out to people and what you think could potentially be true.