First you copy badly, then you copy well, then you improve.
Baby steps.
They are getting into the advertising business. Advertisers and privacy/security don't go together.
India is just getting used to the internet. Massive market. Billion users.
As Jio, if I'd clone Zoom, I would add encryption, so that only I, Jio, would be able to analyze that traffic. Same thing with WhatsApp.
e2ee in JioChat was just not even implemented. They just copied whatsapp.