FWIW, I would not call it "hyper-" individualism. I would call it individual rights. In God's kingdom and the world of the US constitution, there are not groups. There are individuals. In the US the government protects your rights as an individual, not as part of any group. You are sort of right in your second sentence. That is, we don't care legally. We don't have to. But we should care morally. This matters because otherwise we'd be prisoners of the sensibilities of the "weaker brother". That is, if the loud noise my lawn mower makes scares my neighbor, that's his problem, not mine.
The US constitution is built on the foundation of the rights of the individual. That is why our government can not do to us what Canada and Australia did to their citizens for the last few years. To the US constitution, I am not white. I am not male. I'm not old. I am simply an adult citizen made in the image of our creator and enjoy the same rights as all other individuals. That's the beauty of our system. And as so many say, it's not perfect, but it's the best one on the planet until the Lord returns.
I wasn't talking about individual liberty, but hyper-individualism. Which I still maintain.
Hyper-individualism isn't that each individual has legally protected rights; hyper-individualism is the idea that I, as an individual, should be afforded rights and privileges even at the expense of others. And that is precisely how America has historically operated, and continues to operate.
I also consider it problematic that you are freely blurring lines between the kingdom of God and America.
For one, God's kingdom does concern itself with groups, not just individuals: "Blessed are the poor [in spirit]" and "Blessed are the meek" are expressions of group-association. The way the Bible treats God's people is always corporately, i.e. the Church. Christianity is not a religion of individualistic practitioners doing their own thing; but is instead group-practice and group-identity--we are members of the Body of Christ, our identity is together. The New Testament words like
koinonia emphasize this. Christian--biblical--ethics, based upon God's commandments, are about placing others before ourselves. The ways in which Christianity is practiced in a highly individualistic way in America is not a reflection of historic, biblical Christianity but merely an expression of the American ethos, even when that ethos is in stark contrast to God's own Self-Revelation in Jesus Christ, the inspired witness of Sacred Scripture, and the historic witness and experience of the Church catholic.
Insofar as Christian ethical engagement is concerned, the Apostle St. Paul could not have been any clearer when he wrote,
"
So if there is any encouragement in Christ, any comfort from love, any participation in the Spirit, any affection and sympathy, complete my joy by being of the same mind, having the same love, being in full accord and of one mine. Do nothing from selfish ambition or conceit, but in humility count others more significant than yourselves. Let each of you look not only to his own interests, but also the interests of others. Have this mind in you that was was in Christ Jesus, who, though He was in the form of God, did not count equality with God something to be exploited, but emptied Himself, by taking on the form of a slave, being born in human likeness. And being found in human form, He humbled Himself by becoming obedient to the point of death, even death on the cross." - Philippians 2:1-8
That is what being a Christian means. Rather than asserting ourselves over, and at the expense of others; we conform ourselves--as Christ our God did--by being humble servants. We do not exploit, we do not assert our dominance--we humble ourselves, we give ourselves away, placing others ahead of ourselves.
That is nearly the antithesis of the spirit of America as it has defined itself, not just historically but especially in the modern day.
Christ our God also taught us that no one can serve two masters. When we place America first, we are traitors to the kingdom of God. For in God's kingdom the first shall be last and the last shall be first, and the least is called greatest.
-CryptoLutheran