Funny, was there been a lot of focus in the USA on the fighter jets at that time? Or didn't they get a mention?
Why weren't the US media focusing on that part of the story?
Probably because
there is no evidence for it, other than the fevered ramblings of moronic conspiracy theorists?
Nobody planned or intended to shoot down an airliner.
But the idea that 'enemies' DID, and are therefore dastardly and evil, while 'friends' are lily-white innocents, was too good a propaganda opportunity for either side to miss.
Both sides have therefore spent a huge amount of ink, pixels, and bytes trying to blame their opponents for this mistake.
It was a mistake. The people who shot the airliner down were a bunch of ignorant hicks who had no concept of international aviation even existing, and who, if they had ever thought about commercial aviation at all, imagined that only planes going to or from Ukraine would fly over Ukraine.
As a result, they were trigger-happy, and had no qualms about shooting at any target on their radar screens. Because they were Russian backed rebels, and they assumed that any aircraft in the vicinity had to be Ukrainian military aircraft - or at the very least, Ukrainian aircraft of some type - and therefore legitimate targets.
Both sides of this are ignorant thugs. The Russian speaking side made a grave error which resulted in a tragedy. Those rebels, commanded by Girkin, who made this error, are responsible for the manslaughter of the passengers and crew of MH017.
All the rest of the FUD, conspiracist bullshit and propaganda is just fucking sad, as are those who disseminate this crap as though it was either accurate or important.