"the internet offers an escape from solitude for those rejected in the real world, allowing weirdos, nerds, and the painfully shy to make social connections in ways that would have been impossible for their counterparts in earlier decade."
That statement might have been true in 1995-2012 about forums, IRC, early social media, and Tumblr. It is not really true for the average young internet user today: the corporate platforms centered around phone apps seek to maximize engagement, not provide community.
It is a small number of people who will ever step outside the walled gardens and explore other spaces, but they might find even those other spaces unfulfilling as a sense of community. The fediverse has copied a lot of pathologies from corporate social media. Forums are ever fewer and with a graying demographic that won't necessary give a young person a feeling of connection with peers. Discord does offer some of the close-knitness of old-school IRC, but discoverability is a challenge.