And if you'd stepped in in the first place and told Wyzak to stop his spam/trolling it wouldn't have escalated to what we saw today either. How many people complained about his constant, never-ending stream of shitposts in the SimCity thread? He's got an opinion, nobody has an issue with that, but the way in which he presented the opinion was grating on a lot of people.
Seeing as you used a real-life example, let's use one here too. Imagine a group of people discussing the new VW Polo. Now imagine there's another person who doesn't like the new Polo. Instead of giving his opinion and then stepping out of the discussion, he constantly shoves it in everyone's face. Everyone already knows everything he has to say or will say, yet he continues to do so non-stop. How do you expect people in a real-life situation will react? He'd be lucky if the group simply quietly dispersed and he didn't get a punch in the face.
That is essentially what happened here today. People were starting to get fed up with Wyzak, I got a little over-aggressive, Dan stepped in, I neg-repped Dan for doing a rubbish job, after which Dan banned me.
There's a lot to be said about moderation being too strict, but there's also a lot to be said about moderation being so lenient that users can get away with spam and trolling that aggravates other people. I remember two years back when the comments trolls were here, multiple trolls registered on these forums and despite everyone knowing they were the trolls, you did absolutely nothing. You realise it got so bad at one point that they actually dug up my email address and sent me pictures of my parents, telling me how they were going cut their eyes out? And yet here the trolls sat, protected by MyGaming's lenient moderation policy because they weren't technically doing anything wrong on the forums. At least, not according to the moderation policy.
Anyway, that's a bit of a different tangent, but the point is that while you might think differently, a moderation policy that is too lenient can be just as disadvantageous as one that is too strict.