There are two extremes from what I've seen. One is as you say, the guys that have seen one too many Kai Greene videos and treat exercise programming, muscle feel, time under tension and all that as some kind of ancient art form that is the hidden key to gains. Then on the other hand you get the guys that oversimplify things by the way of saying something like "Yeah just do the big 3, get stronger and you'll get bigger" when there's more to it than that.
I like to think that I'm dead in the middle and have my balance right. I believe that we all respond differently to different things, some respond better to certain exercises or training volumes & frequencies than someone else might (though this generally applies much less to beginners, for whom pretty much anything sensible will work), and I also know that as a bodybuilder that there are parts of your body that just won't develop too readily without a bit of isolation work and so on. On the other hand, I know that the key to keeping the body growing is to train hard and increase overload over time, and you see a lot of programs that I feel really complicate the progression process when it can be so simple. The stimulus is what makes the muscle grow, adapt and get stronger, then you have to increase the intensity over time to force it to keep adapting, simples.