The WannaCry kill switch wasn't inserted to make someone a hero

Following the arrest of WannaCry hero Marcus Hutchings, suggestions have been made that he was behind the WannaCry malware itself, and that he inserted the kill switch to make himself a hero. This seems highly unlikely.
Almost three months after its damaging outbreak, the WannaCry malware remains shrouded in mystery. Last week's arrest of security researcher Marcus Hutchings, better known and… https://www.virusbulletin.com/blog/2017/08/wannacry-kill-switch-wasnt-inserted-make-someone-hero/