I've done a huge amount of study of ancient and medieval Christianity, and all the different heresies the Church worked so hard to stamp out over the centuries.
The Church called them heresies. Today, we would just call them "different viewpoints," or "differing interpretations of scripture."
The most interesting thing I learned about all those old "differing interpretations" is that they're almost all alive and well today in the many and varied Protestant Christian denominations, and even in scattered outposts of the Roman and Eastern Catholic Churches.
Call the roll. They're all out there somewhere.
St. Paul in 1 Corinthians tells us that we see through smoked colored glass, but will see clearly when the perfect comes. Churches are all run by humans. Even as followers of Christ, we still are sinners who have been saved or redeemed by God's grace and love. No one can earn salvation as it is a gift from God via Jesus Christ. Someday, we'll be in heaven in his presence and we'll see and understand clearly. Then we'll have all the answers.
Getting this back to a radio topic. My guess as to why NPR axed religious programming is those shows were Christian and statistics (polls) showed that most born again Christians are of a conservative bent (meaning they more often than not vote conservative or Republican, or as Independents leaning conservative), which doesn't line up with NPR's left leaning bent. My guess is a Muslim, Jewish, or Hindu show would be welcomed on NPR, but liberals generally are not open towards Christianity. There are liberal Christian denominations (United Methodist, ELCA Lutheran, Episcopol, Prepyterian- PCUSA), but those denominations have been losing numbers for the past 30 years where as the conservative denominations have been growing by leaps and bounds. So even though NPR does a pretty good job of presenting a balanced news report as I mentioned in an earlier post, their view point is decidedly liberal, pro Democrat, pro abortion for any reason including partial birth abortions, a very worldly elitist view, etc. My guess is ( it would be interesting to actually find out) that most if not all employees at NPR and their affiliate stations lean left politically and are not a member of any Christian church where being born again and where the Bible is taught as the inerrant word of God and is read as the literal word of God, as a key factor in faith (as in Assembly of God, Non-Denominational, Charismatic, Southern Baptist, Lutheran Church Missouri Synod, etc) So airing any sort of Christian program, especially one that up lifts Christianity and Biblical teaching, probably rubs many of the NPR "faithful" the wrong way. As far more NPR contributors are liberals who are not religious at all or at least not conservative Christian religious as defined above, why upset the apple cart for a small group of odd ball Christians who might be listening to NPR.