LOL, you're not Protestant, are you? Billy Graham, admired as he is, has no more authority over Protestants than the man in the moon.
Actually, I am a protestant...an ordained Methodist elder to be exact, so I know what I’m talking about when I slam the Methodists.
So far as using BG’s name, it was to make the sentence shorter than saying: “the respective bishops, bodies, conventions,etc. of the various denominations”
BG is a widely recognized name of a protestant leader.