I think "Omega Glory" is a good show, but it all falls apart for me as soon as the flag makes its appearance. It pushed my suspension of disbelief too far, even when I first saw it in the late 60s. The ritual fight between Kirk and Tracey is well done, and looks to be entirely Shatner and Woodward with no stuntmen.
If they'd found something to do other than have Kirk sing Yankee Doodle, it would have been a great show.
I agree with this 100%. There's so much good stuff in this episode, the ending just kills it for me. It's not "parallel" development anymore, it's identical development. With Miri or Bread and Circuses, there were parallels, but things were different in some ways. This is implying directly identical things on a seperate planet and it was just vaguely obscured by pig latin. Morgan Woodward was great, one of the greatest guest stars ever, both times. Finding the Exeter was really good, and I like how the Enterprise hung back behind it while they were still determining what happened to it. And Dr. McCoy has a great quote, " Spock, I've found that evil usually triumphs unless good is very, very careful. "
I just figured an Earth vessel had crashed somewhere on Omega IV and the Yangs adopted them and their ideas as their own because they were similar. Americans trying to escape an ever more diverse country and planet. They brought copies of the American flag, U.S. Constitution and Bible with them.
No time travel and no parallel development.