How one could go from being "Mo" who hadn't prayed his whole life and would do everything to fit into the host culture he was born into but parents did not come from, to suddenly one day being Mohamad, shunning all non-Muslim company, quoting hadith to every question he gets, whether it had any relevance or not. A world that suddenly went from one black and white, to another.
An Arabic proverb comes to mind and it in my opinion explains today's "extremist" phenomena:
Al shayy min al Dodd yofham
Roughly meaning, through the opposite a thing is understood (explained).