I can tell you when I needed to do that,

- receiving wires to my bank account
- sharing an online wallet at blockchain.info with a business partner, for arbitrage
- sharing an encrypted Cryptomator cloud drive with a business partner
- giving Netflix password to my mom
- encrypting ZIP file with AES and sending the ZIP by Dropbox, while password by another method
- getting a password to an encrypted hard drive that was mailed after it was recovered by recovery service

However, the "password" here is a euphemism for an encryption key. If I were to call the app "Transfer Encryption Key" it would suffer the same fate as PGP and Keybase. No one knows what is a key or a fingerprint, but everyone knows what is a password and understands that it requires privacy and care.

“What's in a name? That which we call a rose by any other name would smell just as sweet.” -- Shakespeare