You’d might be conflating my comment with someone else? I’m not against moderating. I just think it’s a bad idea to blast these communities or users onto the front page when they’re found.
No example has been able to squash out bad actors and unwanted content completely. That’s the impossible task I’m referring to. Neither volunteers, nor paid staff have accomplished this for any site. In all your example there are still areas flying under the radar.
As such, it’s better to not inadvertently fan the flames when you find the fire, don’t make their soapbox bigger. Instead put it out quietly so it doesn’t harm anyone else.