CREDENTIALS ARE NOT ORDINARY DOCUMENTS
A spreadsheet called Passwords.xlsx is still a vault.
So is an email draft full of credentials. So is a text file on someone's desktop. So is a chat message you keep searching for.
The difference is that none of those were designed to manage secrets well. Use ordinary tools for ordinary information. Use an approved vault for credentials.
UNOFFICIAL VAULTS
Passwords.xlsx
Spreadsheet
Spreadsheet
Draft email
Saved credential copy
Saved credential copy
Chat history
Searchable secret
Searchable secret