Render to Caeser what is Caeser’s, and all that.
I agree that when we are judged we won’t get to say we couldn’t act because the government wouldn’t let us. But as your own point of the Apostle’s money box shows, there is the notion of collectivist action and pooling of money to support actions that help the least of these.
He certainly puts no restrictions on who should be helped, give to any who would ask.
Most of your points are actually points I use to rail against institutional Christianity, corrupted officials, charged with helping and serving, turning the system into their own little slush fund. The system is not spoken against, only the corruption, the money changers and corruption introduced to the Temple system.
He certainly held up the woman who gave all to the Temple coffers, part of the Jewish system of collectivism.
Understand I am not the kind of postmodern who opposes the individual. But I am absolutely opposed to the hyperindividualism we have as a culture continually held up as the epitomy of existence. And that especially includes that which has crept into the evangelical church, such as what the OP is speaking about.
So much of our theology has pushed individualism to its unacceptible extreme. yes, no one gets to ask forgiveness for my sins for me. I have to do that. But much of Modern evangelical Christianity has turn salvation into an abstracted, isolated event. Jesus “my personal” Lord and Savior. The world will know we are his follower by the love I show. But their is a collectiveness that is both implicit and explicit in Jesus’s teachings. Sadly the Modern Evangelical has tossed it aside for political power.