Luckily, since I really wanted to learn, I had to seek alternate resources. I was fortunate to stumble on Stanford's Cs106a taught by Mehran Sahami and it changed my life forever. That man is the gold standard for what a teacher should be. He broke down complex ideas and made them look so simple.
Since then, I use a combination of different resources to learn said "difficult concepts". Recursion, got it...pointers, got it too. I have used Standford courses, Berkeley course, udemy, Udacity, Coursera and even youtube to learn. These sites have some really good teachers.
I have since come to understand that CS is really not that difficult. All is takes is a willingness to learn and a good resource to learn from.
Maybe so, maybe not. However I never had trouble when they tried to teach me things. And have heard good things from others who they taught.
One of the people who expressed this basic opinion to me is https://www.amazon.com/Randal-Schwartz/e/B000APA744. He is also someone whose expository abilities are widely recognized as being excellent. And he is also an example of a self-taught programmer with no degrees beyond graduating from high school.
Or maybe they're just bad teachers.