According to this source, the US intelligence budget for 2014 was 67.9 billion US dollars. That's about 130,000 kilometres of $100 bills laid end to end or about three times around the world at the equator. Which is quite a lot of money, even if a lot goes to administration, overhead and the like.
So, you'd think that if an airliner was shot down over an area that was being closely watched, all this money would have bought quite a lot of information.
But, two years later we still await the US intelligence evidence.
Instead we have
a couple of recordings clumsily stitched together out of different conversations.
some blurry videos that are easily faked and have been.
and let's not forget Marie Harf's "basic common sense".
Well common sense would suggest that, if we haven't heard about the other stuff then
it isn't there or
it contradicts what Washington has been saying.
QED. It's not that complicated.