That’s an accurate quote!
It provides NO praise of the authors book or prior behavior whatsoever.
It merely expresses the hope that they will better serve humanity and Christianity in the future.
Which is something you would do well to say to anyone on the planet, including an atheist or satanist.
It’s something you’d expect in a generic form letter response to a gift, which is exactly what it is.
It doesn’t say that their book or prior behavior was consistent with genuine human and Christian values — it doesn’t provide any evaluation or commentary on either whatsoever. That’s where your reading comprehension skills have failed you. Probably helped along by a lying title from a leftist publication.