Finding affinity groups on social media can facilitate actual personal interactions. The clearest example is dating. It is now quite common to find couples who state that their relationship would not exist if it were not for the benefits of having found each other online.
Other less intimate examples include: Finding people to play cards with; ride horses with; enjoy ideological and altruistic causes in groups; ride bikes with; playing pickleball with; etc.
Thus, while using caution when using social media is prudent, avoiding it completely may actually work against the best interest of modern people.