If such crimes are not prosecuted, look to the federal prosecutors for failing to do their jobs.
My impressions also. The take I got from the article is that the ATF is not doing its job. The article’s examples were one after the other crimes that I thought the ATF was supposed to enforce. The article never once mentions this aspect.
While on active duty stationed in one state I purchased a rifle and took it with me to a follow-on assignment in another state. You’re claiming that’s a federal crime?