Nah, you are overreacting as usual. Shardul esp. has bowled enough good balls. The difference is that they are not showing the patience to keep bowling the good ball and not be frustrated by all the plays and misses. Its a newbie problem, though its much less of an excuse for Shardul. I did not see how Bumrah went.
The problem is we have always had issues bowling to left handers. The two guys in this team who are gun bowlers at lefties are Siraj and Ashwin and they have hardly bowled.
The one consistent issue I have had with Rohit as a captain is how dependent he seems to be on what the backroom staff and analysts tell him and how long he takes before going to plan B. We saw it in the World Cup final as well when he brougth on Shami earlier than he should have (which I was fine with, as its a big game) but he should have had Siraj bowling by the 6th or at least the 8th over at that end and yet he let Bumrah and Shami run themselves totally out of fumes by bowling them for 5 straight overs.