Not OP, but there's a difference between having a legitimate and interesting discussion involving unpopular opinions and simply mouthing off at a bar. However, the reaction on the internet today tends to be one and the same for both cases: the online equivalent of being punched in the face. Being attacked publicly can go beyond uncomfortable in many cases (complaints to your work, family, death threats, etc).
The written word used to involve significant barriers that made one consider everything they said. It was also taken as a more formal medium, as it tended to be more permanent. Today, instead, you can express yourself online with next to no effort, and the majority of people write down thoughts as if they were in a verbal conversation, which has a far different permanence to it. I occasionally scroll back through comments I've even made myself on this site and have no recollection of what I was thinking or the comment when I said it. Yet there it is as a permanent record of who I am/was. Given that, I'd rather keep my controversial opinions to myself on social media, as I may not even hold those opinions in the future. I'll use meatspace discussions with friends, colleagues and others I respect to refine them, rather than the 'arena' of public opinion.
The written word used to involve significant barriers that made one consider everything they said. It was also taken as a more formal medium, as it tended to be more permanent. Today, instead, you can express yourself online with next to no effort, and the majority of people write down thoughts as if they were in a verbal conversation, which has a far different permanence to it. I occasionally scroll back through comments I've even made myself on this site and have no recollection of what I was thinking or the comment when I said it. Yet there it is as a permanent record of who I am/was. Given that, I'd rather keep my controversial opinions to myself on social media, as I may not even hold those opinions in the future. I'll use meatspace discussions with friends, colleagues and others I respect to refine them, rather than the 'arena' of public opinion.