That article says:
But what it doesn't say is that engines can be designed for the boost. My 3.5L EB was, and has been tested in really harsh conditions and survived. And, as I've said, I'd much prefer to tow with that than Big Blue's 7.5L. The smaller engine's turbos give the low RPM torque that's needed, and when you take it to the mountains you don't lose any power nor economy. And, speaking of economy, it gets the same towing as Big Blue does running light.