There was a good article in “The American Rifleman” a few years back. It was written by a member of the 6th Cavalry who was stationed outside Tombstone during the time of the gunfight.
He lived to be over a hundred. His opinion of Wyatt Earp was the same as yours. He said he was a pimp and only used the badge for his own purposes.
He didn’t think much of Doc Holliday either. He called him an insane killer.
I used to have an old WESTERNER magazine that claimed the Earps spent their “off” duty time robbing stages in AZ.