Anons, if you even skim the NZ shooter manifesto, you can see there is ZERO chance the writer was "a regular working class white man". Even he was "really" a "working class white man" he would have to be a devoted autodidact as he skillfully addresses a range of ideas that do not easily align with anything picked up from the mass media, nor from any SINGLE obvious alternative source. Plus, the writing is generally quite good.
It seems obviously meant to mimic both Ted K (a genuinely intelligent and educated guy, and largely an autodidact) and Anders B (still fairly smart, but overtly follows Ted K in many ways).
He is supposed to appear as an "unhinged far right racialist" who is incorporating a vast array of traditionally "left wing" ideas. But the reality is that anyone who does espouse such views does not advocate such terrorism.
Probably the goal is to associate QAnon with pro-environmentalist ant-globalist but overtly racialist movements, and to associate them with terrorism.