The reduction in thickness isn't a shortcut. Division 2 balances its higher allowable stresses with increased requirements for non-destructive examination (NDE) and material toughness testing. It ensures that while the vessel is lighter, it is manufactured to a much higher level of internal integrity.
Addressing these issues does not require undermining ASME’s revenue model. Several balanced approaches could preserve funding for standards while improving real-world use and safety: asme section 8 div 2 pdf
When you open your PDF, use the bookmarks pane. ASME’s official PDFs have deep, nested bookmarks for every clause, figure, and table. This is far faster than scrolling. The reduction in thickness isn't a shortcut