Of course you can make your own choice... but trusting critics in gun magazines... hell, might as well trust advertisers.
The barrel on the Sport is not chrome lined. It is salt nitrided. But I would take a lined or salt nitrided barrel in a rifle like this over an unlined one any day... This is not a bench rifle. Throat erosion and erosion at the gas port is reduced in a treated barrel, which means the barrel will last longer than the unprotected one. Even though most will not shoot out a barrel, when you can get a barrel that is lined or salt nitrided at the same price as an unlined barrel, it is a no brainer.
The Smith is also made in America... As is Colt, BCM, etc. Nothing particularly special about Ruger in this regard.
The delta ring design... why? The other design has been tried and true for over 50 years. Visit the Ruger forums and read about how that delta ring gets stuck, and how many get broken trying to get them free.
Another fail on the Ruger is the exposed firing pin on the BCG. The Ruger uses the design that Colt came up with to prevent slam fires... The same design that Colt abandoned a few years later. The Ruger uses the firing pin to cock the hammer, vs. the ramp on the BCG from basically every other manufacturer, resulting in buggered up firing pins over time.
And while I thank you for your service, I also served, so I have protected the same freedoms as you.