The OP is essentially a (white collar) labor version of this. What is evidently valued is an appearance of expertise, rather than expertise itself. Just like the capitalists who want to make money, and skipping production of actual goods in order to accomplish that, "professionals" are going to skip actual learning in order to appear knowledgeable.
For 200 years, people have hoped that the "free market" will sort out the problem that Marx saw. It didn't happen - we still get financial bubbles that cause trouble for many people. So, I suspect it's a mistake to assume the learning problem will fix itself either. I suspect people (society at large) will have to consciously value the hard work of learning for this to be fixed.