That's right, machine learning requires knowledges of so many fields, so if any problem occurs, developer has to do so so many check to find the problem, and optimize it.
Have you watched any of them? I just watched "Build a Self Driving Car in 5 Min" and the content was good. My only complaint is that his demo used end-to-end learning, which isn't how most self-driving cars actually work (but he acknowledges this).
