But how will you get a “universal” view of the fediverse? No single authoritative view exists.
You yourself acknowledge that this is complicated, but I honestly don’t understand what appeal a hacked together fake centralized system would have for people if they don’t care about decentralization in the first place. Any such solution is almost inevitably gonna end up being janky and hacked together just to present a façade of worse Reddit.
Lemmy’s strength is its decentralization and federation. It’s not a problem to be solved, it’s a feature that’s attractive in its own right. It doesn’t need mass appeal, it’s a niche project and probably always will be. I don’t think papering over the fundamental design of the software will make it meaningfully more attractive to the non-technically minded.
I can kind of see where he’s coming from, but only if you’re weighing it against an assumed future where we’re going to die out tomorrow. That’s a low bar for hopeful, and certainly not “100% positive”.
I have a hard time seeing I Have No Mouth and I Must Scream or even worse, All Tomorrows, as “hopeful”. I’d honestly rather just die.
Plus, not all sci-fi involves humans, and not all sci-fi is in the future. There’s scifi with no humans in it, there’s scifi set in the past or in an alternate present, and none of those qualify as “hopeful by default” in the way he defines it any more than any other fiction does.