It's certainly the case for me, especially since I didn't start playing piano seriously until 26. I now make my living playing and I find that since so many pianists started very young, they are absolutely terrible at explaining how to improve when people ask for specific advice. They literally learned so young that they don't remember when it was hard or what they did to improve.

Sadly, my performance schedule keeps me busy enough that I don't teach privately, so I try to help people out where I can, including on reddit, but often my real world experience and is smirked upon by the world of academic music (which I was once part of). You can lead a horse to water...

In real life, I've found that there are two very different sides in the music community. There are those who are band directors and music teachers who play their instrument very infrequently (maybe a little at church or some other very "legit" gigs), and then there are performing musicians, some who are no formally trained, but who often have a much better working understanding of musical concepts and play frequently in all type of settings.

These two sides almost don't know each other exist. It's so bizarre. I'm literally the bridge in the community between the two because I'm the one weirdo who runs in both crowds. I'm one of the few musicians with a degree (like all the music teachers) who doesn't look down on jazz, popular music, and performing in general. In general, they sort of look down their noses are the performer types, but that's largely because of the way academic music programs are taught... they teach you very little about the actual way music functions in the world (practically pretending the last 100 years of music didn't happen) and they teach you to be an elitist. I was once proud of my elitism. So glad to be on the other side and understanding both sides. Sadly, those who are still deep in academia or are current music students don't like to hear the message I bring or the things I've learned from mixing both perspectives.