it also makes me laugh since the ex thinks he's so important and I'm not deep at all (he's kindly said this before, how deep he is and how much he wants to get out of life whereas i live my life in a series of checkboxes?!),
Narcissists project. It’s total BS. He is secretly insecure that he’s NOT deep and he knows you are.
Let that “friend” know you don’t want to see any more of his BS, so please don’t forward you anything else? You already know what a self-absorbed idiot he is.
I can’t remember if you read The Sociopath Next Door yet - if not, you need to.