It's the algorithmic manipulations combined with the inherently antisocial and isolating design of the tech itself. Everyone is in their own little bubble and the opportunities for spontaneous shared experiences are limited by this. Smart phones shatter our sense of a shared reality and literally give us brain damage from simply using them. They were designed to do this to increase profit for shareholders. We destroyed the fabric of society all so a few people in Silicon Valley could get obscenely rich addicting the population to online slop and replacing it with where our real lives used to be.