The author can believe whatever is fashionable. I dare you to consider the body of all psychological literature on the subject of the personality. It is so apparent and obvious that the personality is neither fixed nor completely mutable that I find the article to be essentially nonsensical.

Who here supposes anyone is a tabula rasa? Who here supposes anyone emerges in this life fully formed and actualized? This is a spurious dichotomy that is erected time to time based on cultural norms and stipulations - much of it propagandising to suit others desires and ends.