Unlike social media where people have their own pages to write what they want and control the posts on their walls, the DIS is a discussion forum that gives everyone the opportunity to start a thread and gives everyone the opportunity to respond to a thread. The rules are pretty simple - be courteous when you participate here,
www.wdwinfo.com/guidelines.htm. When a hot topic is posted, or posted in such a way to get a rise out of people, then human nature is to respond in kind. However, everyone also has the option to just not participate in topics or respond to posters that are upsetting.
If a person breaks one of the DIS guidelines, or if you think that the person is attacking you, then the 'Report' button at the bottom of the post should be used. The moderators and/or webmasters will look at the post, and if we agree that it breaks one of the DIS guidelines we will take action. If we don't agree with the report we will leave the post alone. We've been managing these boards for quite a while, and may have a different perspective, plus we aren't emotionally involved. If a poster cannot overlook another poster's comments, then we recommend putting that person on ignore.
This may or may not stop the other person from commenting on your posts, but, it really doesn't matter since you cannot see those posts anymore. If a topic is really upsetting and you don't want to engage with someone, and don't want that person to comment on your posts you have the option to walk away and find another topic on the same board or another board. There are plenty here on the DIS. I also recommend that you consider WebmasterKathy's comment about looking at your own posts to see why they might be eliciting the responses you object to.