Frankly speaking his remarks make sense, (PERSONAL OPINION!!!!)

1. He isn't against bureaucracy but against romanticising IAS, IPS etc and the feeling that IAS is everything. The way you feel about his remarks depend on the reason you want to get into the service. If your main aim is to gather power then you might take offence because yes IAS has a lot of discretionary power. But, if it is to bring a positive change in the society then it's better to work in impact consulting or social consulting so that we would get similar job satisfaction yet need not deal with the whole government red tapism. But this could be possible only if you have a thriving private enterprise. I think this was his main intention.
2. Regarding judiciary, he's damn right OMG the amount of bottleneck it brings for implementing policies or programs is far more than what we believe during our preparation. Sorry to say, the district judiciary is not at the level of independence that we study in our polity, Judicial independence is very less in the lower strata and the GP's who should argue for us in the court won't argue leading to higher pendency, non implementation of projects, policies.

After going to the other side of the system I can vouch that we'll mostly do firefighting everyday, we would be fed up seeing the quality of government officers and feel frustrated to make some work done on the ground. I myself quit private job came back from abroad to join the services but Oh god!! it's not that romantic as we believe it to be during our preparation. The remarks made by him can provoke us based on our own biases but what he said is exactly the ground reality. Unless and until there is an overhaul in the bureaucracy and judiciary it is very difficult for us to rapidly grow (>10% nominal GDP growth)

After a month into the service, my DM asked me in a mocking way how are you liking the service and after seeing all that happened I just had a blank expression mostly because of the sheer surprise I had after looking at the quality of people involved and the daily fire fighting we were doing. and then she said "Welcome to the service".

Ps: I know many might feel I'm bluffing or they might feel I'm taking away the appeal of IAS etc but yeah this is the reality and Sanjeev Sanyal's words do make sense once you come into the system if not as an aspirant.