My take on the crash is this ..
Pilots not at fault, during takeoff it has suffered a complete engine stoppage on both at the same time. The flaps were extended.
They had no electrical or hydraulic systems operational after dual engine stoppage.
The Ram Air Turbine deployed as it left the airfield in the initial climb, this only extends when total power is lost.
Once the RAT deployed, they were a dead plane falling and had no opportunity to save the aircraft. The height was far too low to allow the RAT to provide any opportunity for control power.
It would appear a complete electrical system failure stopping both engines. Fuel is not suspected, other aircraft had the same fuel without incident.
My view is a Boeing problem unrelated to air India. Dodgy build and swarf shorting a wiring harness?
Time will tell.
A tragic state of affairs.
If it's Boeing, I ain't going.