If you notice the audio launch events in the recent past, you can notice one thing common in almost all of them.
It is regarding the chief guest. Either Rajamouli or Vinayak will grace the event as the chief guest or some times both of them will attend.
There are many satires making rounds on these two directors in the social networking sites regarding them. But those write those stuff, should remember that it is only because of the kind nature of these directors and as they can't say no to those who invite them, they are attending these events. They should be appreciated, not trolled.