Yep. The FAA, or any other airworthiness authority, wont just hop up and scribble a dreamy future requirement off their own heads. Regulators probably dont have any ‘expert’ in a recent enough position to do that anyway.
Writing a new CS for new EASA types requires a deep cooperation with a company that has far more expertise than the regulators and the capability of research / experience to prove theories and standards before an authority can present them as a rule set.
Imagine the cooperation required to produce a CS for something like the first Jet Engine? And thank goodness we didnt need a CS then too!