Well (and this is my opinion only...and it's not based in "hate rhetoric" for the man...It's only from what I've seen)
#1 he handles criticism poorly - If you are going to be an educator and claim to want to change the minds of these young impressionable black boys and girls, you need to be able to stand up to criticism. The first mention of criticism he resorts to name calling (calling people BROKE for not donating to his school without a plan, calling them "c00ns" for disagreeing with him or bringing up his questionable behavior with strippers etc.)
#2 he is incredibly self centered/arrogant - He calls him self "The Prince" , has made up a very "loose" ancestry association with Frederick Douglass (the true ancestors of Frederick Douglass have denied he has any blood tie to them). He has a "toy/action figure" of himself
You can't be a positive educator (IMO) if you are more into yourself and your image than you are education. Education is dirty...not in a literal sense. Good educators give up their sense of self to help others, they don't care about "reputation", they care about helping others. His arrogance seems to lean toward protecting his image. In a case where he has to choose between these children he wants to educate and "saving face" his behavior indicates he would probably choose saving face.
#3 No executive board - Any school (especially specialized charter schools) should have an executive board of qualified educators. Any person who thinks they can undertake this type of venture (and should be blindly trust with millions of dollars) should probably have a team of Doctors and Educators at the ready. Even this "early" in the process, this is NOT a one man undertaking. If I wanted to start a school, I would start by getting educators on my side, on the board, etc. so that my plan was legitimate. Even if I believe his education (which is murky at best, fraudulent at worst), his specific education doesn't qualify him to run ALL things in a school. He would need an accountant/financial planner to handle the finances, a curriculum designer, someone to run the housing aspect, someone to run the nutrition aspect, someone to monitor state regulations in regards to educational requirements by grade, someone to monitor the facilities and making sure everything is up to code... etc. etc. The fact that he has no executive board is telling.
#4 His website...
Dr. Umar Johnson, The Prince of Pan-Africanism Just visit this. It doesn't scream professional. I know not everyone is a web designer, but in 2017 you can have a much more professional website for less than $1000. This website looks like it was made by a high school senior in 2002. It's REALLY bad. I wouldn't trust that the man who has his name tied to this website in 2017 and still keeps it running would be capable of hiring the right people to run a boarding school/ academy where kids live.
#5 He is too secretive. This is the most damning one to me. If I was planning to fund a school, everything would be in the open to those who NEEDED to see it. The whole "it's none of your business" trope is a really bad statement when you want to run a school. Education is about transparency. Honestly (in the scheme of what he wants to do) he could get 3-5 million from Oprah or someone else IF he had the right plan, the right committee, the right background. The issue is that he keeps everything hidden, he isn't direct, and that comes off (not saying it is) as shady. I have my MBA. It's a fact 100%. If someone asked me to see it I wouldn't make them jump through hurdles. I wouldn't dodge the questions and try to turn things back around on them. I'm proud of the achievement, I would show them. For him, whenever the question has been brought up, he hesitates to show irrefutable proof. I wouldn't want that person running a school where I would send my child.
Again, NONE of that was me saying "oh he's a clown" without some type of tangible proof from what I have seen from him on multiple interviews. He is incredibly intelligent and a good speaker when he gets to control the narrative. He resorts to childlike behavior when he is pressed. I don't think he is a terrible man OR a criminal. But not every "decent man who is not a criminal" deserves millions of dollars to run a school.