Lemmy is decentralized but completely connected together. I am on lemm.ee but I can still subscribe and comment to Lemmy.world or any number of other communities. The website you type in to visit Lemmy doesn’t matter. All Lemmy instances go to the same place. OP is arguing that a large centralized instance is bad which I don’t think anybody can disagree with. Lemmy.world has been down like every day. Tons of stability/DDOS issues but that only affects communities/users localized on that instance. Problem is that’s like half of the active Lemmy users right now.