This report is utter BS.

Indian pilots do not commit suicide (unlike German pilots).
And I won't believe in defective switches unless it is a motorized switch that can move on its own to reflect the state of the engine.

It probably is just a normal switch. Can burgers not make a switch anymore? Hard to believe, even if it is Boeing.

This plane was most likely "accidented" for geo political reasons and the evidence presented is probably fake.