If you have issues with anxiety and stress that can be triggered by an argument online, then it would be ill advised to continue to participate in the argument, let alone start it.
Also, just a word of advice to anyone trying to make a point and facing opposition, you should never EVERdisregard the persons point, and say it to them directly. If you want a point to be made and don’t want to consider another person’s opinion or idea, then don’t respond to it. Replying to the person by saying that you’re not going to read or acknowledge their words or point is arguably the WORST way to go about things as it not only makes you look stubborn and foolish, it destroys your credibility.