We use the Microsoft Authenticator IOS App with our Microsoft MFA solution. This was implemented to prevent our users from having their credentials stolen and used to log into our company's cloud computing services.
This addition would be useful because we only receive a popup that asks if we approve the connection. I can see scenario's where the end user gets s random popup and chooses to “Approve” because they think they need to. There needs to be some way to deter the behavior.