I talked with the team yesterday on this, and they changed my opinion a bit. There is some merit in implementing a “use only” feature, in conjunction with disabling export, copy to clipboard, preview, etc features.
It makes it slower to “copy” the password, and at least slow people down when doing so.
The business case would be an admin in a company has people copying credentials locally and actively avoiding using the chosen solution of an organisation. This may help an admin drive adoption / enforce best practices. Not super high on my whishlist of things to do still, but it’s not off the table.
We would need to set expectations clearly though for the administrators, as we don’t want to encourage security theater.