self inflicted?
Not credible.
Coincidence? Nope
Incompetent flight planning, incompetent crew, incompetent CSAF in the cockpit forcing the crew to land under minimum weather on unimproved airfield after TWO missing approaches in heavy fog.
It looks more like a suicide than an accident, let alone actions of the third party.
Voice record is available for years. There is too little room for conspiracy theories.