The major use case for putting TOTP into a password manager is the ability to share the account in a company or family setting. For example, some social media

The major use case for putting TOTP into a password manager is the ability to share the account in a company or family setting. For example, some social media accounts don't support multiple users and so you either need a shared company phone for 2FA or you can put TOTP into the company password manager along with the password. I see no workaround for this. I guess you could have a separate company 2FA system that is shared like let's say you use 1pass for passwords and bitwarden for 2FA, but still, local machine exploit will gain access to both.