This brings to mind a quote from André Kertész: "Technique isn't important, go on and make mistakes. I've been making mistakes since 1912."
Anyway, learning technique is very important, of course. But accomplished people eventually realize that the technique was just the very first step along a long path that may ultimately lead nowhere in particular.
Our culture rates genius so highly, some people find it embarrassing to admit that they had to take that first baby step just like everyone else.
Other people (a.k.a. teachers) don't have that ego issue and are willing to discuss the complexities in the learning process, with the hope that they might help others.