[ConcernedCitizen]

I certainly agree, but what's the point of this software if used in a VM ?
If I understand correctly it's just a web browser with special anonymity features to prevent detection of any fingerprint, but if you're using a VM that's already the case.
Or did I miss something ?

You're half right, there. A VM doesn't defeat fingerprinting which is what software like Brave Browser.
Other things that defeat browser-based fingerprinting alone would be FraudFox, Tails, but that's obviously not just for the browser.