If you find a shop that you feel needs to be reported...report it. If you need to vent, talk to a neighbor, friend, etc., not on the forums... no calling out is a real rule, and it makes sense. There is always the chance that the caller-outer may be wrong...and in doing so will hurt a seller that has done no wrong....but the damage will already be done by the caller-outer.
When someone calls out in the forums what do you think is the percentage of sellers or buyers that will actually read the calling-out. I read that only about 2% go to the forums...so what would be the good of taking a chance on being shut down...not much. Again, vent elsewhere. Or, report the shop in question and then zip it. I get just as frustrated as anyone, but I don't want my shop closed for the sake of breaking a rule.