My take here is that commodity money theory is simple and robust. It doesn’t require constant tinkering and rulers to facilitate trade. Bitcoin absorbed this philosophy imo.
Credit money theory on the other hand is an obvious inspiration on Eth heads.
In regards to your question about lending and borrowing, I won’t be able to explain this better thank nostr:npub1a2cww4kn9wqte4ry70vyfwqyqvpswksna27rtxd8vty6c74era8sdcw83a did in nostr:npub1r8l06leee9kjlam0slmky7h8j9zme9ca32erypgqtyu6t2gnhshs3jx5dk ‘s podcast: https://stephanlivera.com/episode/518/