Kohli is this 13 year old kid who takes a firecracker and tinkers with it thinking what would happen if I do it this way not the other way or adds some other substance and it usually blows up in his face.

As a captain, you need to trust your players. You can't expect them to smash everytime as he expects, some youngster like Dube or Barman got out so quickly meanwhile a good captain like MS or Kane will look at a player and see if there's some way his potential can turn into performance and persists with him, Kohli doesn't have that factor. Multiple players have said that Ganguly basically told youngsters to play without worry, they aren't getting dropped for the next ten games or so.

You have heard everyone say that "oh we got a plan for world cup, we know what to do", no they don't. If they had already picked their players then they wouldn't have tested someone like Gill, Siraj or Shankar so close to the tournament, they're simply picking players based on short success and inviting them the way out if they don't fire in like three games.