I don't think I'm insinuating anything. I'm forthrightly saying I don't think the evidence is clear enough to support the conclusions in the OP. I then pointed to specific problems - we don't know the publication date for the first book, the piracy date, the trend of sales before piracy, or what trends are typical of similar books. I also think the author's jump to accuse an Amazon employee of piracy is evidence of a tendency to jump to unsupported conclusions.
I personally doubt the author is lying. I assume the author is stating what they think and giving the evidence they have. That's good, but I don't think their conclusion follows from their evidence.
I personally doubt the author is lying. I assume the author is stating what they think and giving the evidence they have. That's good, but I don't think their conclusion follows from their evidence.