I haven’t watched the ISIS video, but the number definitely is inflated (or your typo was “American”.) According to the DoD, 4,424 Americans died in Operation Iraqi Freedom and 1,845 died in Operation Enduring Freedom. (source)
50,000 isn’t even close, unless I’m (or you’re) misunderstanding what the 50,000 figure was supposed to be referring to.
Other than that, great article ;)