Most of the Mega family members are in films. We have so many Mega heroes that detractors are trolling them as a cricket team. Hence, one Mega hero is not promoting the other publicly. Now members of the Mega family are also not evincing interest in entering into films. Ditto with Sai Dharam Tej. His brother Vaishnav Tej is trying to enter into films, but Sai Dharam Tej appears not keen on it.
Though he is maintaining a diplomatic silence, he knows pretty well that the fans did not even appreciate his Supreme Hero title also. His films have been failing regularly. Introducing another actor from the same family and invoking the name of Chiranjeevi again may not go down well with the audience.
Hence Sai Dharam is keeping his sibling in shadows. One does not know if he is backing his bro or not, but it is clear that he is making no efforts to promote him.