I'll take a bite, yes it makes a difference in a number of ways.
First of all, they take thousands of dollars each day, so shutting them down for a week has a huge impact already.
Second, it makes them know they are being watched and compromised from within.
Third, the police and officials in India are corrupt and complicit, no way around this. No doubt bribery is involved. Tons of scam attackers on Youtube from the safety of their own homes attempt to send information to the police in India, and nothing happens.
The police only take action when news stories or documentaries are released that show them for what they are. They don't like looking bad from western media. After a previous documentary, they did some arrests on one place. So viral content like this, while it can appear cynical, can help get news out in the western world, and make the police embarrassed again.
The killing of their groupchat was also a great play, could easily remove people who had some reservations about the scam calls, but thought they were safe.
Was it dangerous yes? Especially once the guys on the ground were spotted. But don't think it wasn't effective.