As with all U.S. mandatory safety and health regulations or independent recommended guidelines, they must eventually change focus and evolve scope with changing times and design developments. So it is with Mobile Elevating Work Platforms (MEWP), formerly known as Aerial Work Platforms (AWP).
When it comes to totally eliminating all fatal falls from roofs, fall prevention (guardrails and restraint) certainly takes precedence over fall protection (PFAS and safety nets).
The international fall-protection industry retroactively developed the suspension trauma relief strap as a marketable add-on to their line of full body harnesses.