Unfortunately, the insurance policy against that trap - that annoying people will keep asking "why?" - itself has a steep price, sometimes almost turning into a heckler's veto. It's a tough problem.
Sometimes that ignorant schmuck annoying us is the only thing pulling us out of a hole. Consider Alfred Wegener and his theory of continental drift. He was a meteorologist with no formal training in geology, and his ideas were rejected with what I've seen described as "militantly hostile" reactions. Before Barry Marshall, it was doctrine that peptic ulcers were caused by stress, and stomach acid. His theory that the real cause was bacterial led to cancelled speaking slots, blocked grant applications, and so forth. He finally resorted to intentionally infecting himself with H. Pylori and developing gastritis, then curing himself with antibiotics. Ignaz Semmelweis offended surgeons - seen as "holy" men in noble work - by suggesting that their unwashed hands were killing patients.
Thomas Kuhn, a philosopher of science, said "When a shift does happen, it's almost invariably the case that an outsider or a newcomer, at least, is going to be the one who pulls it off... Insiders are highly unlikely to shift a paradigm and history tells us they won't do it".
I agree that people repeatedly making you (again, the general "you") explain can slow down progress quite a lot. But this seems to be the price for having a democracy rather than a technical oligarchy.