What you are saying disagrees with what scientists say.No, humans evolved to live in groups. "Society" is all the extraneous, non-natural stuff people have added to make these groups work in a way not ruled by base instincts.
Whether animal behavioralists, neuropsychologists, anthropologists, sociologists, historians, archeologists, etcetera, all agree that the formation of a society, namely the learned group behaviors as opposed to instinct, is fundamental to the human species. Perhaps historians especially view the society and its cultural relativity as the primary mode of human identity constructs.
Yes, penetration=femininity is a Hellenistic philosophical ideal, evident in philosophical debates. However, we likewise know from the Hellenistic comedies that many men did indeed enjoy penetration. Avoiding penetration is something like "polite" and "civil", whereas male-male penetration is "wilderness". Both happen. Likewise we know about Hellenistic transgender, intersex, and other identities.That is not entirely true. Ancient Greeks and Romans viewed being penetrated as being a woman's role and forbade "real men" from engaging in such activities under great societal pressure (even to the point of viewing a man performing oral sex on a woman as wrong).
I am less knowledgeable about Indigenous South Americans and Central Americans. But I am skeptical about that interpretation because of other traditions that I am aware of, as well as historical reports from European Christian missionaries.The Aztecs, despite having a god of male homosexuality, made homosexuality a capitol offense--as I mentioned earlier, I've read it's because gay couples don't produce new taxpayers--but they also put men captured in battle but who weren't sacrificed in the same category as gay men as being "lesser."
Some cultures have thirdgender. Many cultures have two genders. The cultures that have thirdgender organize the understanding of it differently from each other.In addition, in many cultures, third genders were assigned to people were intersex or who didn't fit societal roles properly, like an "effeminate man," not necessarily because they are what we would call transgender or non-binary. I'm sure many of them were transgender or nonbinary, of course, but it's doubtful all of them were.
It is accurate to emphasize how the achievement cis-hetero supremacy is recent and artificial.Yes, and again, this is still because historically (and it doesn't matter if you're counting two centuries or two millennia here), people have been oppressed for being "wrong" no longer have to be ashamed of who they are.
Having a male body is different from having a female body, or an intersex body.If you have a fantasy race in a fantasy world that doesn't have a history of oppression, why would they be proud of their sexuality? It's completely normal. It's like being proud for having two hands when barring accidents, every member of your species has two hands.
Consider, for many gay men, the male body of their partner is precisely what matters. For other gay men, it is the gender of their partner that is fundamental to ones attraction.
Each kind of body, each kind of gender, each kind of community is a reason to be proud of ones own identity.
It comes across as somewhat homophobic or transphobic to claim that samesex couples or trans persons are unable to feel pride in who one oneself is.
Patriotism is a near-universal example of human pride in ones own identity group. Pride is intrinsic to identity. It has little or no dependency on oppression.I really don't know what nationalistic jingoism has to do with anything.