There are not terrorists involved......it is a military operation
Journalistic malpractice in this article
Mining the crash area strikes me as indicative of low rung actors running the show without any oversight.
The grunts might like the idea of mining the area, as they know that the people who have been shooting at them will be effected; however, a more strategic thinking staff would cancel that plan based on the PR damage.
That said, we are dealing with Russians and they might not care, thinking that they can just deny that they did it and leave it up to the propaganda organs to fight out the strategy.