If it's optional advice that's fine, but if it's required, any interruption prevents you from publishing new events
Discussion
Ok fine, people took authenticated data structures to retarded degrees, most famously the linked list.
But Bittorrent already works as I described, you have a merkle tree over the full torrent file, and you can use Mainline to update the latest hash of your mutable torrent.
So I think we agree.
If there's a more reliable but less available feed that you can layer other nostr events over, that sounds good to me. My take is that relays are just one possible way to optimize distribution - the fundamental core of nostr is signing things and distributing them