I think the old boy is trying to sell his new rifle and got shut out of the process!
There were some good points about procurement, however.
Think about just changing out uppers and magazines to adopt, say the 6.8 SPC. Then what to do about the old stuff. What a massive overhaul. Not to mention the fact that 6.8 and .223 are going to get confused and used in the wrong guns if they are mixed. It does make for a bureaucratic nightmare.
However, to say the AR is outdated and the AK is modern.... is a horrible comparison. They are both old designs that have similar histories of reincarnations.
My AR is good, but I like the less stress of my AK,\. Either will do the job equally well when used and maintained the way they are supposed to.