I agree that these indicate a cover-up. I've never said that. I just don't think they indicate that he was murdered by the US government for his anti-war sentiments (or for any reason).
There are plenty of uncited discrepancies from your source material.
I'm not super great with quote formatting on mobile but here goes:
"The doctors — whose names were blacked out — said that the bullet holes were so close together that it appeared the Army Ranger was cut down by an M-16 fired from a mere 10 yards or so away."
So you tell me they can differentiate between a M249 SAW (the weapon blamed for his death in the official friendly-fire report) and a M-16 but not a M-16 and a M-4?
Rangers had not carried M-16s in almost a decade at that point. There literally wouldn't have been one in their platoon.
"In his last words moments before he was killed, Tillman snapped at a panicky comrade under fire to shut up and stop "sniveling.' "
Again, this does not support a conspiracy to murder him over his political beliefs. I find it hard to believe that one of the guys in his platoon killed him over that but I can at least sit with that one.
Finally: "To say specifically what happened to him, we're not sure," she said. "I think it was probably an act of gross negligence, but because there was no criminal investigation at the time of his death, there really is no way that we'll probably ever know." source
His mother no longer even thinks he was murdered. I'd say she's in a better position than any of us to say.
All in all, I respect Pat Tillman a lot. He was outspoken about his thoughts on the war while still in, something I couldn't bring myself to do. I've yet to see any conclusive evidence that he was murdered for his political beliefs. I'm sure there is some degree of subjectivity in my opinions.
The US government dropped the ball here. There are extensive criminal actions in a cover-up created in order to deceive his family and the American people. These people should be held accountable for their actions. We and, more importantly, his family deserve the truth. I just don't think that truth is that the US government murdered him over his political beliefs.