Originally Posted by
app_engine
Two reasons :
1. SB had worked as assistant to the legendary Sridhar and then started with panneer pushpangaL which was good ; has also done other non-KH movies that were decent (one of them was actually produced by KH himself, kadamai kaNNiyam kattuppAdu)
2. IMO, as a true artist, KH himself won't want to take credit / debit for others' work, while being a whole-hearted team player. That's why SB is allowed to be in the title credits as director. (Not accepting / questioning that is same as questioning the honesty / integrity of KH).
Like MGR, KH involves in many aspects of the movie making - including music making for e.g.
Can we also call him "music director" for Guna, because we hear him call the shots in the cassette? (rAsA veRum tune pOttu & notation ezhudhi instrumentalistkaLai kai kAl Atta vaiththAr dhAnE?)