I think some of the reasons manufacturers dont state what they fix is for safety and liabilty. A fix for one firearm might not be the same for another with similar symptoms. Problem is the way news travels on the web could lead to trouble as folks attempt their own repairs. Protecting people from themselves. Not saying it's right or wrong, just stating what I suspect.
I dont think it's a big deal for them right now because there truly is a massive backlog for them with civilian markets and military contracts. Maybe when the market stabilizes it will be different. They could always change there minds again later. Another possibility is that perhaps Ruger got cold feet and changed there mind about selling AAC, a competitior, the the guns less barrels. Hell look how long it took Ruger to admit AR15's arent evil. Maybe Junior doesnt like NFA stuff. Im thinking more details will trickle out over the next week or so. It's interesting in that I would expect a cutting edge progressive hardware company like AAC would have worked with someone like Volquartsen or TacSol as soon as they learned Ruger was not interested.
See attached. There are rumors that there is more to this than just a backlog issue. One rumor that makes sense is why would AAC, a company part of the Freedom Group work on suppressors for a major competitor, Ruger. It's also said that before Freedom Group aquired AAC, AAC tried to work with Ruger to have Ruger produce the barrels. Ruger was a little nervous about NFA stuff so AAC decided to manufacture the barrels themselves.