The problem for Jaden is is has not earned his bones as a child actor. He didn't start out with dozens of small roles or go to a casting call to win a role himself without his name-brand parents. Will Smith and Jada Pinkett Smith appear to be the WORST sort of helicopter parents because they refuse to let him just go it alone and earn his time on screen. A good actor will take the lumps by taking small roles to get to the bigger game. Jaden's parents have bought his way in, so not one person on a movie set should respect that kid one bit
I will tell you this right now, Jaden Smith at age 21 will be a nightmare if he goes on like this. The young man has a little talent probably, but he need to get out of the action roles to find his center. He should do three years of Shakespeare in the park, get some small roles in some Sundance aspiring films, and just hone his craft. And, if it never happens it never happens....but that won't happen Will And Jada will keep buying his way in until Hollywood whispers in Will's ear "We won't hire the kid...even if you pay us...sorry."