One thing that occurs is that post crash investigations would be the biggest threat to exposing a conspiracy to destroy passenger flights. The first flight vanished over the ocean without leaving an electronic trace. In the case of the MH17 crash location a lack of legitimate and responsible government authority would permit, as is reported to be the fact, the rendering of the crash site bereft of evidential value.
In any case it would really help to be able to understand the real causes of both aircraft losses.