This is what I a saying only from a different angle. The internet is a conduit for raw, visceral, emotional responses that are more tempered when you are staring someone in the face...so in a sense, it is more genuine, which is not always conducive to entirely constructive dialogue....this is why social media has devolved into such a cesspool. We tend to edit our responses to remove some of the emotion more easily when looking someone in the eye...that emotional threshold at which we lose the filter is much higher in person than it is in the internet. Regardless, some people have greater degrees of emotional regulation, which is true on both the internet and in person...just that said threshold will always be lower in a given individual behind the cyber-vale of anonymity.
Obviously a forum like this is a step up from social media because many of us have known one another for decades and have in fact met in person, which alters the dynamic a bit, but still different from actual face-face exchanges.