No, it absolutely is useful behind the scenes, because even if someone wanted to, they couldn't fudge the numbers at all. The current system relies, to some extent, on trust, even within the system.

Blockchain allows anyone, in your org, for example, to access the system and not having to trust them. If they make a transaction it will be seen. This would be amazing for accountants and forensics because they can KNOW all transactions are accounted for