yeah dat or the hyper stack is industry leading in terms of nat traversal - nothing comes close and is also NOT hobnyost at all.

nostr is a toy and not even worth mentioning in this context.

dat has no repevant central bootstrapping nodes. its dynqmic and every peer becomes one and every app can add dynamically on top of pers constantly collecting and sharing more potential bootstrapping nodes.

... and what i just shared is not just an idea, but a reality in the ecosystem that works

try projects like e.g. https://holesail.io for example