Golf needs Tiger.  And vice versa.  He is far from the best player any more but he is the draw.  None of the top players today can match his star power.
It is delusional to think that he can be great again.  He will make remarkable shots along the way but any golfer can do that.  I once made a hole in one but can't break 100 any more.
He is now a celebrity, an attraction.  But he can't and won't win anything significant again.