From everything that I have observed over the years, attaining a higher rank only amounts to how much intimidation one can then wield among those of lower rank (at least within that system, since nobody really has any acknowledgement for any other system's ranking, LOL).
Those who taught on a full-time basis (in lieu of having a real job), were often forced to offer/include nonsensical instruction (i.e. "karate-aerobics", "sparring classes", "TCM" etc.) none of which had any relevance to the learning of "Te", but would generate extra income to pay their bills.
I understand full and well why they do so, I just don't agree with it.