I couldn't help but think of some of the discussions here, while reading this article.

So you are saying you agree with Peterson? Bigot!

On a serious note, I think it is social media echo chamber that poison discourse. It encourages group think and one-up-manship. This in turn skews your sense of normal and acceptable.

True story. I used to frequent a site that had thoughtful political commentary from liberal-leaning point of view. Then they implemented like system. Over a year it turned into intolerant echo chamber hostile to dissent. Why? People craved titles that came with getting more likes and that turned group dynamics against dissent. While nobody admit, getting likes became more important than actual debate.