He didn't have to directly help them. But he could've asserted his unflinching trust on them , it'd be a great look as a leader. Daya went crazy when he thought Pradyumn died. He went above and beyond to find the person responsible for his death , how'd he feel if he heard this remark ?
Tbh, I didn't like the SOS character at all. He pretends as if he's oh so intelligent, yet it never crossed his mind that Daya could be on a mission to eleminate sleeper cells ? He knew the existence of sleeper cells and could also see that the targets are very hand picked . So why'd a reputed and decorated officer just go on a random killing spree ? Why not look into the profile of the victims and find what binds them ?
He focused too much on who and missed the why.
No wonder Daya couldn't trust anyone with the mission . SOS could've easily compromised the mission by informing the higher ups , not understanding this simple fact that spies of neighbors are sprinkled there too.
I agree with that
With regards to the sleeper cell track , it was half baked at best , Daya acted clueless until he was in Mumbai and then it's revealed that he was briefed about the mission beforehand.....so why mislead with dialouges like "main duniya ko aag laga dunga tumare liye"? It was a shoddy attempt at a red herring
Coming back to ACP there's a reason why everyone has been calling him stone hearted right from Dr Nyanti , Dr Wagle , Abhijeet and Daya so I did expect this from him eventhough it was hurtful to hear him say such things.
SOS was instructed by some official.in Delhi to take out the sleeper cells , Daya and Shreya were instructed by another person in Mumbai plus SOS needed to protect his cover so ig he didn't probe the case in that angle plus he already made up his mind that Daya is a sleeper cell during the investigation which was wrong in his part.