I have heard FAA officials make incorrect statements (sometimes in writing) many times over my 40 yrs in aviation.
Sometimes people prefer to let sleeping dogs lie.Perhaps I ought to do that. Honestly I'm surprised that one of the national ultralight or hang gliding/ paragliding organizations hasn't done so already, but if so it's never been referenced in any of the on-line discussions I've had on the subject.
I think most sanctioned record attempts obtain the proper waivers, etc.One would think it would be of particular interest re soaring pilots setting FAI records-- I don't think the records are valid if you violate airspace limitations.