Usual silly opinions. The engines could not have ingested anything from their own exhaust jets. Physically impossible with take-off thrust.
Speaking of silly responses.
First off, the post was not my opinion, it was a statement in the press, in its entirety, from an Air India Sr Pilot.
Second, guess you have never seen a -200 with a gravel kit? Not only a vortex generator on the cowling blowing compressed air to prevent the engine from sucking up gravel, but also fenders on the front gear to prevent from kicking gravel up into the engine.....
That damage to the fuselage is right behind the wing box and upwards of the gear...yet that was caused by the gear or engine exhaust ???