Strong lean or weak likely FF. He had some very unfortunate social and political opinions (like Tolkien, but more severely so, partially because more conventionally so in a lot of ways) and Mere Christianity is a fairly facile text--and is to some extent supposed to be. But The Great Divorce is excellent, as are Til We Have Faces and a lot of his academic work.
Tolkien was a monarchist, traditional Catholic, anti-industrialist/rural romantic, softcore libertarian anti-nationalsocialist, apartheid critic. Which of those things do you consider "unfortunate"?
His support for Francisco Franco could certainly be considered so.
Sure, but that more or less went with the territory of being a traditional Catholic and Monarchist in the 1930s.
Which is unfortunate.
Touche.
As I recall reading, his opposition to the republicans and support for Franco was based largely if not entirely on their views on religion and the fact that (as I
recall) the commies weren't being too overly kind to the Church and such, a somewhat identifiable position.