1. Many of them are mega contrarians. If you check their history or profile they fall under one or more pseudo categories. Either flat earth, pretendian, or some other silly campaign.
2. It's a defensive or coping mechanism for the type people (ignorant) who when they're wrong and been shown to be wrong, instead of admitting they're wrong they start trolling and being silly. The type people that try and "beat you mad" even when they're the one in the wrong.
3. It's avoidance and admittance to feeling powerless. It's "hey don't highlight that because theres nothing in our power to do about it, so we rather not think about it. And if you mention it, we're going get angry at you for forcing us to even consider it".