There have been sporadic reports of heavy fighting in and around the area where the wreckage came to rest, including combat with IFVs that mount a 30mm cannon. Intentional or not, it is possible for the wreckage to have been shot up by one. (After the aircraft crashed and became wreckage, that is.)
Sure, they could, in a effort to confuse or destroy evidence, but that effort would be evidence in and of it’s self.
In time, we should get a forensic investigation.
Just don’t expect it anytime soon. They withheld a lot of stuff from the Korean airline downing as well, but eventually it came to light.
All this confusion is not just a Russian issue. There was a lot of it when we took out a Iranian airliner as well. All sorts of claims...like they emptied out a morgue and put them on the plane.
Some of which is still argued today.