Lots of people have (mistakenly) called the Monk good over the years. You can prove how bad a Monk is with a Power Point presentation and people will still be like "nuh uh, there was that one time the Monk won initiative, ran 300 feet, and stunned the BBEG, busted!" or "Look at all those special abilities! What a broken class!" or "Monks don't need weapons, armor, or even magic items!".
I don't know what it was like on ENWorld, but back on the GitP forums, we basically had "Monkday", that day of the week some new poster would show up to complain about how OP the Monk was, get told the truth, and refuse to believe it for 20 pages.
Or someone would pop in with their big theorycraft about how Monks really are awesome, they just need to max Charisma, take Use Magic Device cross-class with Skill Focus, and purchase partially charged Wands (you can find Wands partially charged, so they must be available for sale, you know) to have a 50% chance of spending an action to buff themselves to be equal in combat prowess to a Druid's animal companion. Not the Druid. Just their companion.
My favorite instance of this was Big Eyes Small Mouth d20, where the designers tried to break down the power level of classes based on how many abilities they got, and, after seeing Monks get stuff at every level, concluded that they were the most powerful class by far.