you have any qualifications or are you just letting words roll out your pie hole?
January 1991, 9 Marines/Sailors killed between 2 incidents involving A-10's firing on Marine vehicles. I have met people associated with the 2nd incident in which 7 Marines were killed when their LAV was hit with a Maverick Missile.
March 2003, between 8-17 Marines were killed when their Amtrack was hit by a Maverick Missile. The track was loaded with wounded Marines making their way back to 1 Bn/2nd Marines BAS when it was engaged. I had personal interest in this one, and was able to read the investigation. I'll throw some blame at the forward air controller, but the responsibility for dropping the ordnance lies with the PIC.
The Brits and Canadians may have a bigger beef, since I know A-10s have torched 2 Warriors. Anyway, do some google searches for A-10 fratricide and you'll find plenty.
To be fair, my statement is a truism, as American deaths to enemy aircraft since WWII are extremely rare. And, to be fair, the amount of fratricide attributable to Vietnam era aircraft would probably (a) compare and (b) be harder to find due to less fratricide documentation back then. My point is that people look at the aircraft and weaponry and say "ultimate close air support aircraft" when its operational history in that role has been dubious. On the other hand, I know that there's at least one F-117 pilot that can probably attribute his successful rescue to A-10s. As an interdiction aircraft, they excel, mostly because the Air Force excels at that role. CAS is best left to the Marine Corps, in my former professional opinion.