How does the existence of few large servers negate the need for streamlining sign ups or easy scaling? Reddit has 1.2 billion monthly active users. You really think those 3 servers would be enough if all of reddit decided to migrate? How would those needed new servers be created, and by whom? At a certain point, with real scale automation is a necessity.
If it’s a perennial problem that you keep hearing about, maybe there’s something to it. I will note, I did not once ask “why servers”. I’m fine with servers and I get servers. The issue I see is that while most nerdy tech type folks can easily wrap their heads around the concept, most lay people cannot. That’s not to say that picking a server of your liking should go away, but for the onboarding process for the masses, which I would think most proponents of the fediverse would want to include, the process needs to be a lot more seamless. Automated stuff in the background that keeps the decentralization, but doesn’t bother the user with the need to worry about it. It’s simply improving the user experience. I realize it’s work, but I think it’s work worth doing.