I can't help but note two things:

* the IETF's approach predates 15 U.S.C. §4302 by more than a decade

* every single case example cited is US-American scoped¹ SDOs: American Society of Mechanical Engineers, National Fire Protection Association, American National Standards Institute²

¹ NB scope ≠ legal domicile. The IETF's legal status is… complicated… but does have US dependencies. Its scope is world-wide though. Not so for any of the mentioned entities, even if…

² …ANSI is a borderline case since it is the constituent ISO member. But still, it's the US entity.

I'm not trying to make a legal argument here, but… I'll say he shouldn't be trying to do that either. Most mathematicians and CS majors make very poor lawyers in any case, and often enough without any awareness of it.