I'm still trying to find out why people say that it is good
Why? Isn't it sufficient that you can't figure a cob out and others, to their satisfaction, can? Why keep beating yourself up over your inability to enjoy a cob. Go with the pipes you find satisfying.
I think "self-fulfilling expectations" play a role in the cob discussion. Many smokers get a great experience from the lowly corn cob. Some smokers can't tease an acceptable smoke out of a
Peterson according to their posts. Others hold steadily to the idea that price plays a role in how well a pipe smokes. The pipe is an individual experience with different expectations. I need a bent pipe, fitting the hand comfortably and attractive to the eye, correctly packed, to get the most from a bowl. But, I can get an enjoyable smoke from a cob or a birch pipe, freshly carved by my old hunting partner (He was a wonder!), out in the middle of No-where, Alaska.
Personal biases, preconceived expectations, and the like play an important part pipe smoking. If one anticipates a bad smoke, one will most likely get a bad smoke.