…and that matters because? 
He’s not trying to teach people how to become super-java-programmers, even his final videos are still in the realm of “basic”. He’s just teaching us the foundation. 
No, Agro meant that he himself is a master of nothing he teaches. Sure, he might know about the subjects, but I seriously doubt anyone would consider him a master at anything yet. He’s a smart man, but I think he is a information regurgitator. It seems he learns fast, breaks it down into small learnable chunks and then passes on what he has learned to his fan base via those chunks of, well information.
It has nothing to do with how he teaches, it has everything to do with the man he is and what he has to decide what to do with his life.
Very true, that’s probably exactly what he’s doing too. I wouldn’t be surprised if a lot of the information in his own tutorials he completely brain dumps after the video series is complete. Nothing wrong with knowing a little bit about everything, but eventually you have to ask yourself “what is he GOOD at?” and the only thing that comes to mind is “teaching introductory course in basically everything”. I guess you could attribute his skill set to basically being an middle school substitute teacher who can functionally do the introduction level courses of everything, but he’d be screwed if he had to teach a college course.
I used to promote the newboston’s channel, but now looking back at what it taught me, I really recommend you do not learn from his videos. As Agro said, he talks about personal life a bit too much and he teaches you bad practices, like naming variables completely random, unrelated names. Basic stuff that can grow into a bad habit. There isn’t a doubt that he is a very smart person, but I personally would not recommend him. Other than that I think everyone else has everything covered.
Yeah, just let me re-iterate. Code a lot! The more you code the more you’ll learn! As many famous coders have said, (or at least one coder, because I heard it from someone famous!) stop thinking about the code and just write it, you’ll learn a lot more and you’ll have the great sense of pride when your project is done 
None of us are perfect, however, so don’t worry if you stop coding for a while after you first start. I did it, I took around a half year break and came back to it and have yet to go a day without tinkering at least a little with my code!
Good luck
wait… you mean that I shouldn’t name all my classes some variation of "Food, “Tuna” or “Dog”?! (kidding of course)
This topic is getting derailed now, but I really have to say to this day those names still crack me up He is a funny guy, I would be really interested in actually meeting him in real life!