‘Incels’ seem convinced that their hatred springs naturally from a lifetime of being lonely, shy nerds. This is a slur on lonely, shy nerds everywhere, myself included. Most of us do not consider our loneliness or frustration the logical prelude to murder.
It was the biggest mass murder/massacre in Canada since the École Polytechnique shooting in '89. And had the term 'incel' been around back then, I'm sure the shooter would have described himself as such, considering the rage he held for women.