If someone with authority and credentials ever gives you the impression that a topic is "too complex for you to understand" then that is a 100% sign they are a bullshit artist. I have never yet encountered a discipline or domain where key principles could not be articulated simply and clearly, and applied by anybody. Sometimes you might need to learn a lot of simple steps in order to traverse the path of knowledge, but there are never great leaps that require olympian minds to jump the gaps. A dogged determination to locate the essential simplicity will always go further than a mind hooked on the social kudos of adulation for mastery of unnecessary complexity.