Generally speaking yes, with small communities at least. When communities get larger it tends to require more moderation simply because you'll risk more disruptive posting that makes the forum unusable.

I think the problem is most people can't really handle the difference between, disruptive posting vs simply posts they don't like. Posts can be generally offensive but not actually be disruptive or malicious. As sometimes you do indeed need to offend in order to even have a discussion. But many people can't handle dealing with content that is offensive to them.

In general, online or otherwise, the way to deal with disruptive posting is to simply ignore it and not give attention. In smaller situations this is very effective as it gets the disruptive person going to seek their reactions elsewhere. But some people will not take that advice and will react to it, and the larger the group the more of those.people.there will be.