Common sense says that since there was no need (militarily) for the Ukraine government to field a SAM system, largely because there was no air attacks to defend against.
Secondly because the particular area where the SAM was launched was in the control of the so called “separatists”.
The Russian propaganda that you read and are now attempting to use as a refutation to the obvious can only be considered to be utter baloney and obvious favorable propaganda issued by Russian agents located almost everywhere in media.. and everywhere else.
I did not refute any published news about Russia’s probable involvement in the shoot down. I wanted to point out that Russia probably had supplied the Ukraine with such capable missiles when their man was president. When their man left the Ukraine in a hurry the missiles did not go with him. I gather you are not historically up on tricks and lies used by all nations over times to further political actions. Think of Hitler and WWII in which I served. Think of Ike and the U2 incident. Think of LBJ and the Gulf of Tonkin. Think about Khrushchev and the Cuban crisis. Think about all the disinformation put out by Arab nations. With many years in my mind I believe I am closer to reality and knowing sometimes one’s common sense is just that, common but not necessarily factual.