The end effect manifests on the hinges... but the hinges are not the point that needs reviewing to eliminate flutter.

As stated flutter is a side effect of turbulence. As the surfaces move in a harmonic fashion, undue stress is placed on the hinges.

If you eliminate or dampen the harmonic fluctuations, you likewise eliminate or greatly reduce the stress on the hinges.

Doing any of the above has a far more pronounced effect than anything you could do with the hinges....