The tangled web just gathers more knots. If T C-T calls herself an instructor thanks to conducting some lessons in a meteorology ground school then I too must be an instructor. I did some unpaid lectures for PPL candidates cramming prior to taking their exams. At least I was a Scientific Officer for the UK Met Office in the '80's so could at a very long stretch, describe myself as a meteorology specialist. It was enough to get me two screen tests for TV presenting but the public had a very fortunate escape.
yours
absolutely not an instructor
B Fraser