We fear what we do not understand?
Let me lay it out more bluntly for those that don't enjoy esoteric ping pong (esoteric solitaire?).
If you get good at the hobby, you become bad for the hobby, by default. This is achieved via the combination of a decrease in spending as you mature as a fish keeper and a decrease in your enjoyment in the hobby over time due to a variety of factors (topping out in space, money-spent, density/size of fish, perceived welfare of your fish, etc.). So stop for a second and ask yourself (not just RD., everyone) if the above is true.
Personally, I'm not sure if this is true for myself or not. Certainly if you don't derive enjoyment from the hobby in one of the ways I've outlined above, this wouldn't apply to you. Just the same, it wouldn't apply to a fish keeper that does not desire to be better (which may actually be the majority of those in the hobby). But for those that want to be better, such as might be found on this site, becoming better might be a danger to their continued enjoyment of the hobby.
If that is true, which of course is an open question since none of us has the answer, then should we continue to help them become better? Should we actively stop learning? I'm not advocating this of course, but it's an interesting line of thought, even if you (anyone reading this) wants to lock it away and not think about it.