This is a very poorly written article.   The most key and relevant facts are left to the very last paragraph:  Crawford suffers from a major mental disability and mental illness that are well documented by his 5 years of commitment to the state mental hospital.    Pursuing the felony charges would have no doubt simply resulted in another not guilty by reason of insanity verdict, just like his previous criminal case.

That is clearly why this felony charge was not pursued.   The man is too sick to prosecute and send to prison..