In the unlikely event that this isn’t a trolling comment, my “American Nationalism” above refers to the post-Civil-Rights-era idea that we should prioritize our American identity over our racial or ethnic identities (ergo I’m talking about the last decades of the 20th century and the first decade of the 21st century).

By claiming that such an ideology existed or that it had some benefits, I’m not implying that it was ubiquitous, uniformly distributed, or otherwise perfect.

My point was "identity squabbling" predates any universal American national identity, so it wouldn't be a deprecation of the said American nationalism, but a reversion to the pre-independence/antebellum/civil-war/reconstruction/pre-civil-rights-movement race- and gender-identity norm.

Yes, I agree that identity politics were the normal state of affairs; I didn’t intend to imply otherwise.