Kenny "The Jet" Smith says Shaquille O'Neal had every right to clap back at a hater trying to diminish his success ... telling TMZ Sports no superstar has won a championship on their own.
As we previously reported, Diesel went OFF on a Twitter user for claiming he wouldn't have won his 3 rings with the Lakers without Kobe Bryant ... saying, "no person can win without another star big dummy."
We spoke with Smith about Shaq's issue with the heckler .