Christianity and Atlas are not incompatible. The Biblical ethic has never endorsed thievry either from the church or state. No where did Jesus suggest that one should confiscate the wealth of others for the common good. Charity is always a matter of conscience of the individual in Christianity. It is true that many religious people as do many non religious people warp the idea of Christian charity as the justification for any and every largess of the state. I may suggest though that it is no accident when socialist and communist regiems rise they see as a clear enemy the church.
From the article: whether a man should sacrifice for others is wholly separate from whether he ought to be forced.
When liberty begets prosperity, as it always does, charity follows. Charity fills the vacume that statists seek to fill.