I grasped perfectly what you said.
The engineers wrote Operator's Manuals that clearly state Lo Range is to be used when performing "work". Mowing grass is "work". However, there are some owners who insist on performing "work" in Hi Range and then blame the design of the tractor when it fails to ascend grades while cutting grass.
When you push any machine beyond its design limits, then who is at fault? Sure, if a tractor is driven by a hydrostatic pump instead of a hydraulic pump, you can ease off on the control lever. Trust me. I get it. However, I wouldn't trade my Case for any of the hydro powered units that are out there today. Most of them will be in the scrap yard within ten years time but my Case will still be motoring along just fine 40 years from now, thanks to its design and rugged components.