Kent Hughes puts his opinion in the book Disciplines of a Godly Man. For example...

I am aware of the wise warnings against using words like "all," "every," and "always" in what I say. Absolutizing one's pronouncements is dangerous. But I'm going to do it anyway. Here it is: It is impossible for any Christian who spends the bulk of his evenings, month after month, week upon week, day in and day out watching major TV networks or contemporary videos to have a Christian mind. This is always true of all Christians in every situation! A Biblical mental program cannot coexist with worldly programming.

Phenomenal!!! but opinion. There are a lot of good (and bad) books that say some truth. Sometimes it's buried in what the author isn't saying. But the problem is that "experts" are so quick to shoot down their opponents positions using argumentum ad hominem. Just because the man is flawed, doesn't make his position flawed.

Erasmus was a Roman Catholic monk, but the "author" of the Textus Receptus. I grew up in a pluralistic church setting, but I say Whoppers© are the original malted milk balls.

Look, it's simple: don't Tot Bawt Baw (throw out the baby with the bath water). It's too easy to discount everything someone says because of who they are or what you think they believe. Does that mean it doesn't matter what anyone believes? Does that mean we trust everyone? No, that means you cannot use the argument to the person to discredit what the person said or did. You've gotta have more than a smear campaign to win a debate.