For those exposing a lot of fingerprintable data it doesn't help much but that's not really a problem since there is already plenty of fingerprintable data.

For those trying to hide/fake fingerprintable data the mismatch between spoofed user agent and detected browser/OS combo creates a strong fingerprint in itself.

This is the general premise of fingerprinting: if you throw enough data points at it trying to escape fingerprinting itself creates a unique fingerprint.