He was supported by his family. I'm sure you understand that receiving support doesn't make mental illness disappear. And in the US, no one can force him to take meds unless it's proven in court that he is going to harm himself or others.
Neither has an easy markdown format that doesn't require fairly proprietary tools to convert to ascii. Plus I'm underwhelmed with the ux in general. But thanks anyway, glad to know more about the state of the art.
So it seems it was already fairly easy and legal to build and own a very high-quality firearm with general attention-grabbing features mentioned in the article? Not a legal advice or suggesting you should do so:
I've purchased unregulated 80% lower receivers (they're only legally "a gun" if more than 80% of the machining work is complete. At or below 80%, they're just considered a chunk of metal.) and machined them using nothing more than a woodworking router, a hand drill, a jig, and a vise in about 30-45 minutes.
The jig is the most expensive part, costing about $160 or so, but once you have it there's no wear parts and you can use the jig to build as many as you want.
You can still sell it. You just can't be producing guns for sale. There are limits to how many you can sell and when you can sell them, beyond which the federal government will presume that you are producing the guns for sale.
Your logic is "white men have some privileges, therefore white men have absolutely no prejudice against them and absolutely no problems in society". This is sexist, racist, bad logic.