quote from https://radicle.xyz/guides/seeder :
"While a peer-to-peer network without seed nodes is feasible, it is impractical. This is because regular “user” nodes go online and offline all the t...
Except that unlike nostr things (dunno about repo-hosting specifically, but in general) don’t keep a full copy of everything locally. In radicle any contributor fetches everything and always has it all (for repos they care about). If things go down it’s as easy as one more server and flipping a switch.