It may be counterintuitive, but we actually need less armor, and we need to be more flexible and unpredictable. Instead of dictating that no unit can leave its base unless in an MRAP or MATV, we must allow them to use Humvees, all-terrain vehicles, snowmobiles, and ruggedized pickup trucks when appropriate. Knowing their movements are being watched at all times, units need to use deception, such as varying the time of day and night they move, their routes of travel, and the types of vehicles in which they conduct missions, to keep the insurgents constantly guessing.
This is just nonsensical and a poor defence of FM3-24 bad ideas. Tanks are a tool. They require skill to be used well, just as do any other vehicle. Use tanks, use Hummers, use Snowmobiles.

The Soviets were a 3rd rate army so discard their example.

Better to have a tank and not need it, than not have one. If this is not well understood, then there is a massive training problem in the US Army and apparently within the SF community.

When the article says "and we need to be more flexible and unpredictable" what he is really saying is "we need to be less stupid badly trained." Vehicles alone, regardless of type, will not help that problem.