I think to a degree, yes. One can appreciate the art (ie the writing) without thinking too hard about the content. Otherwise 'Lolita' wouldn't have been such a huge hit for so many years, I presume.
We can condemn RayMoth for the lies, the prevarication, the twisting of the truth, the obfuscation, etc, but continue to admire the prose. After all, the 'unflinching honest' description was probably added by PRH, rather than the couple themselves.
Am not defending the Walkers in any way here, and would love to see a proper investigation into how this came to be published as 'unflinchingly honest' without anyone seemingly doing the most cursory checks, but to a casual reader who, let's face it, probably doesn't give a damn about any of the contents of our ten threads, it's still a 'nice book about walking'.