Anything can be an idol. When we objectify certain types of objects and consider them more Godly because they are what we are used to we can mistakenly fall into the trap of idolizing them. Books are about the content not the medium.
While doing some study on marriage I came across this video. Dr. Robert Mounce is a Biblical scholar, commentator, and translator. He helped contribute to the writing of the NIV and the ESV. His son, Bill Mounce, wrote my Greek Textbook “Basics of Biblical Greek”.
I appreciated greatly his love and devotion for his wife, now 92 years old and suffering from an extended illness. This is a man who understands the essence of marriage in only a way I could hope to emulate someday.