The article argues that Orwell’s greatest fear wasn’t torture or totalitarianism, but the loss of solitude, and he fled to Jura Island to preserve his inner life. If he thought solitude was hard to obtain then, one can only imagine his reaction to today's constant connectivity. I'm sure many people do their best thinking collectively, but I'm with Orwell, and value long periods of solitude and nurturing my inner life…
Not to get into it deeply, but it's a force that has two sides. One is external, the group's desire to overwhelm the individual a la communism/the Borg. And another is internal, the fear of being overwhelmed by the group, stripped of identity. Of course that whole concept is itself the flip side in tension with its opposite; affinity/coviviality/socialbility and love/belonging of the group.