Will it be an end to unity when yahoo answers closes, where people from the left and right were able to come together to troll each other?

Yup, I seriously think so.  The Establishment way forward is for us to retreat to our own hive mind groups.  The social media giants struck first by beginning the censorship and shadow banning of conservative opinion.  In the near future, there will be conservative social media, and leftist social media.  Nobody will speak to each other in the opposite camps.  This divisive order suits the Establishment perfectly well because they can pick us off while we look to each other as the enemy and never hold them accountable for their actual abuse of power.