That's definitely an important caveat to my rant - when someone is a qualified expert and they offer a valuable course, it's wonderful and they are, as you noted, providing an essential source of education and training to the world.
My frustration and I believe that of many others stems specifically from an influx of fake-it-until-you-make-it faux "experts" who do NOT offer real expertise, and instead prey on the curious and education-minded in order to profit.
There's got to be a balance or the really great courses will get buried under a litany of empty, greed-oriented ones. Thanks for adding this valuable insight to my article, Rick!