RE: Objectivism holds that there is nothing wrong with charity, so long as one is pursuing one’s own values in providing it.
Then the ATTITUDE is not Christian even if the act looks outwardly Christian. Christ gave of Himself sacrificially because of His love of others and He teaches His followers to do the same.
And as in the incident of the Widow’s mite, Christ looks at your heart.
I agree that it is not Christian, but in our modern times it is the best ally we will ever find. The non-religion and anti-opression tenets staunchly oppose Evil Islam. The individual liberty and laissez-faire capitalism principles stalwartly oppose liberalism, socialism and communism and fascism.
In spite of Objectivism rejecting faith, its embracing rational self-interest and personal happiness as the guiding purpose of life grants any sovereign individual tacit license to hold personal beliefs as desired, Nathaniel Branden notwithstanding.