The NRA realizes this; for decades they've fundraised on the notion that the US was hours away from making Nazi Germany look like a trip to DisneyWorld. Yet, the NRA never challenged any law or legislation on the basis of the 2A.
Instead, the NRA reaps buckets of cash from the firearms industry and providing a multi-level marketing scheme not unlike MaryKay cosmetics to insecure fat, white males.
Think about it. If one looks at Yeager's resume (remembering some of it is bogus), it's terribly thin. Much of it involves taking 'courses' from those whose own credentials are pretty thin yo non-existent.
But such is the world of gunloonery. Here's how it works. Suppose I'm a gunloon and thoroughly enjoy my gunloonery. So, I decide--'hey, how can I make some cash off of this?'
It's easy.
First, take a whole bunch of courses from other grifters. Don't worry--you're not going to fail, the beauty of these courses is that once you pay your fee, you're guaranteed a certificate suitable for framing.
Second, the grifters you patronized will, in turn, refer other clients to you. This is known as 'multi-level marketing. IOW, I take a course from A and A refers others to me and I refer them to B, who refers them to C and D. All the while, those at the chain reap the benefits.
This is how James Yeager earned a living. He had no particular skill or expertise--just a gun fetish. And many gunloons believe their fetish is an occupation.