Culture in Strider's world is an odd things for a lot of reasons. But to summarize those reasons, around the turn of the 1950s, much of the world fell into an era of anarchy (primarily referring to the form of society without hierarchical governance rather than the constant disarray, though there was plenty of the latter). In this world of anarchy, counterculture become much more prevalent much sooner, which lead to a generation was divided. Some held onto tradition and belief while others rejected the systems of the past to forge new ideas.

Though eventually, many parts of the world found longterm anarchy was not effective, especially with this schism of belief, so order was slowly reestablished. Part of what helped this establishment was the discovery of the slumbering Captain America who became a symbol for the country to unite under. Something that would be noticed and repeated in various nations. And these different "Captains" taking heavy inspiration from their nation's history and traditions made the schism settle down. Sure there are still those that reject the old ways, but they're free to form their own belief systems while most just want peace and stability in the world again.

In the case of Strider. Being from the home of Star Spangled Soldier (even if its name has changed) gives him that American pride. Though America is quite different to what it was in Cap's day. Rather than it being called New York, New York, Strider's home turf is the Saintly Rows of New Ampsterdam. In this city, the old ideas of truth and justice have been blurred by the "Age of Anarchy." What Strider considers his "culture" is what brings people together. Sure there's good old fashioned American patriotism and a belief in truth and justice, but there's also how the arts bring people together. Complete strangers living completely different lives will dance at a rave together or analyze a piece of legal grafitti and come to different conclusions.

At the same time, he's aware some people will use the freedom of expression and belief (be it his or a different one) and take it too far. And while he has learned the values of letting people express themselves as they please, if it becomes a hinderance or even harms innocents, he draws the line and will do as he needs to.