US Hawks Hang Gliding Association

https://s.tamasha.com/statics/videos_file/573435_0_normalized_640x360.mp4
Not HG.
HG pilots will go elsewhere.
USHPA can have this guy and his friends can bury him.

It is indeed a sorry day that I must remind the members and officers of the USHGA,
    and the staff of its publication, Hang Gliding Magazine, what hang gliding is.
    Hang gliding is the simplest form of flight.
    Our wings are light and maneuverable.
    Micrometeorology holds great meaning to us.
    We challenge the wind to games of skill.
    When we win, our rewards are airtime, distance and tremendous exhilaration.
    We desire the serenity of the sky.
    We are a breed apart.
                -- Rick Masters, letter to Hang Gliding Magazine, May 1981

What is so difficult about knowing what hang gliding is
and having a hang gliding association?
Why can't hang glider pilots do that?