Oh no indeed, #clearnet torrenting is also completely insecure for anything which could be in any way compromising.

I'm inclined to agree to a point, it would be preferable to have something far closer to a #P2P setup. Unfortunately connectivity issues (end-to-end on my CGNAT? No! - average ISP) & privacy (network analysis & dragnet) on the clearnet make that a bit inconvenient.

At the #ActivityPub level, single-user instances aren't meaningfully different from multi-user.

The main reason for #Gnutella's decay is that it's profoundly insecure in its #clearnet-centric state.

An #I2P-only implementation would possibly be usable, but like most protocols not designed around pluggable transports as a first-class concern, it'd require significant deviation from the standard protocol.