Atlas:

Here is a news flash for you. "They," as you put it, are not always the cause of "...poor shooting." Believe it or not, as you will eventually learn, it is not uncommon that an equipment malfunction or inferior gear can be the cause. No piece of gear alone is a miraculous panacea.

Also, just because you have not yet observed "wear and tear" on fletch or vanes, does not mean that it does not occur. Just how many archers have you bumped in to and all had a "WB" mounted on their bow? If a person runs a pro shop, sells the item, and also repairs fletching damaged by the rest, I give his account much more credibility.