Hmm... not sure how you know I played Civ 4 and not any of the other variants, but well done that is in fact that only version of Civ I've played.
Ha!

If you must know... it was your join date. Civ 4 was old-hat by that point and Civ 5 hadn't been released yet... No point in pre-joining a Civilization website in anticipation of a game you never played. See, I'm a regular Alex Cross I tells ya
As for the rest... I will indulge, thanks for asking... Your red-hat/blue-hat analogy is so spot on, thanks for making it. A more tangible/meaty example that tracks precisely, if I may... is the theist-atheist debate, where you have both sides claiming that the other side is making a claim and therefore has the burden of proof. Now I tend to lean towards the atheist's view in this regard, that the theists are the one claiming god exists... however, I recognize that I am biased in their favor, and because I recognize my own bias, I can also see that there is merit in theist claim... that atheists are also making a claim, ie that god
doesn't exist. The point is, in my view, everyone should just argue/prove their own position and admit their biases, rather than trying to claim that they are somehow objective and the other side has to convince them.
So bringing it back to our current debate. I fully recognize the excellent rhetorical position you have staked out for yourself here... the ol' "You're making the claim not me, so you have the burden of proof!" argument. What I am telling you Manfred is I reject that position as nothing more than a debate tactic, rather than a substantive position. I will also point out again, that we are deep, deep, deep into the weeds of arguing the tangential... what counts as evidence, proper debate logic/format, burden of proof etc... and far off the road of substance, ie the morality of violence... just as I said we would be. I'm happy to continue along these lines... As I said I enjoy debating with you, I just wanted to verbalize what I think is happening.
"I feel no need to be civil to [insert insulting term of choice] like you". Rinse and repeat.
I'm trying to get everybody to embrace "ANOANIO" (any number of adjectives, not inherently offensive) as the proxy for this. In fairness IIRC it was actually BVBPL who coined this... Farm Boy leans towards a string of asterisks followed by an apostrophe and an "s", like this (****'s and *********'s) which I also think is sexy

. Also, if we're keeping score... at this point, in this particular debate you've called me "ludicrous", "stupid" and "blind"... just sayin'.