I still struggle with this, too. I was turned off by Ezzo but later got sucked into trying out Pearl's ideas.
You know... even if we hadn't ready that junk, there would be someone out there feeding us bad advice and information. We would still have to consider different viewpoints, have that inner debate, try out different things, and search out the path that was right for our family. Making judgement calls, rejecting things we discover to be damaging, and learning from our mistakes is something we all have to do. Knowing when to listen to that inner voice (when it's our mother's instinct talking) and when to ignore it (when it's selfishness or self-doubt) is part of the parenting journey, IMO.