I think the bigger thing to worry about is, what would happen if your server fails or is destroyed? Would you have a backup of all your passwords? And if yes, are those backups updated regularly and stored in a safe place that also won’t get destroyed if the server gets destroyed (like, say, a house fire)?

Then, yes, you got the cybersecurity angle too

It’s a lot to think about for something as important and fundamental to everything you do on the internet as passwords (and accounts)