dat is not dead. dat is alive and kicking. dat is also has datrs if rust is your cuppa. dat and its underlying hyper-* stack has industry leading holepunching capabilities INCLUDING on mobile!! ..and you also have bluetooth discovery these days.

its a mature battle tested ecosystem and the keet messenger shows you whats possible.

iroh is just for p2p connectivity and doesnt aim to create what dat is trying - they arent comparable.

in a nutsbell, dat gives you git+torrent but more flexible.

soon datweb will be released to make the stack work in regular browsers - no need for cpoud or any servers - works entirly on just mobile/laptop/desktop ..end user devices