That’s I guess why CSEM is used, because if the images are being shared around exploitation has clearly occurred. I can see where you’re coming from though.
What I will say is that there are some weird laws around it, and there have even been cases where kids have been convicted of producing child pornography… of themselves. It’s a bizarre situation. If anything, seems like abuse of the court system at that point.
Luckily a lot of places have been patching the holes in their laws.
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.