I can't think of a better way for them to stop seeing "waste of devs time" than for us to tell them when they are wasting their time so that they don't keep doing it. It's like not telling someone when their zipper is down. Sure they feel a little angry or embarrassed, but its better than walking around all day not knowing. FYI there are tons of "positive feedback" posts in other portions of the forums. This unfortunately is one of the Items that didn't merit positive feedback.
You could try the BLU, WAR or MNK forums? They seem pretty happy about things in general.