In the moment it might not feel lonely. Exchanging DMs and posting on Reddit / HN / social media might feel like real communication. But ultimately there's a sense of emptiness to it, and it can't substitute real flesh-to-flesh human connection.
But it feels like we're always expected to be on our "grind", always bettering ourselves in an increasingly competitive labor market, so it's harder to go offline and just enjoy life because there's always that lingering sense of guilt that one is being left behind in our collective arms race to...nowhere.