The lone gunmen mythology has basically been key to getting America en masse to surrender it's rights.

So many complaints about government have the form "I'll hit my breaking point and then I'll shoot a bunch of people".

No plan to join a militia, no plan to engage in coordinated action before that. Just a plan to commit a mass shooting and then be gunned down as another statistic. And probably kill a bunch of people who have nothing to do with whatever the problem is.