I'm not pinning this on any group (although if we look at the rhetoric from major events in the past few years, it clearly supports doing so) but I am saying your talking points come straight from the alt-right playbook. Hate fueled rhetoric, plus making the world the bogie man for the sad displaced white boy is literally the alt-right SOP. Let's not stop pointing fingers at them as part of the problem.
For the record, I do not consider myself to be right, I may lean to the right on some issues but as a supporter of Universal-Basic-Income and Universal Healthcare, environmental science etc. I would say many of my view lean left of center. It total I consider myself a centrist.
Where I don't waver from the alt-right on is on constitutional rights, so while my talking points may seem to you to come out of a playbook they are my views on the world and I tend to form those views based of my experiences and reasoning.
I do not believe I am making the world a boggy man for anyone. Just calling the numbers as I see them. I believe these young men are cowards as evident in the Texas shooters manifesto where he explicitly states that he targeted Walmart as he would not meet armed resistance.
I think you misunderstand the things I'm saying are talking points. The sad white boy having no place in the world and sexual rejection being a new and uniue problem that justifies disproportionate response, is what I'm talking about. That's the alt-right bogeyman. That's the fuel for a lot of this fire.