There isn’t a chance in hell of that blowhard winning the election, but yes he is a dangerous distraction that primarily benefits Jeb. He’s the only one that dares say what the rest of us think about illegal immigration and other hard right issues, siphoning off support from the other conservative candidates, leaving Jebbie with the rest. Wouldn’t call it a conspiracy though, just Trump’s ego that is motivating him to run.
“siphoning off support from the other conservative candidates”
There are only two other candidates even making a pretense of being conservative - Cruz and Walker.