>From what I understand, this does not seem to be the case.

Maybe. Determinism isn't dead, by any means. Depending on what model of quantum mechanics turns out to actually be correct, full determinism might be just fine. But even if one of the models that would invalidate full on determinism is correct, 'adequate determinism', similar to what Stephen Hawking believed in, might apply - the idea that the level any quantum fluctuations occur at makes it unlikely to result in any difference at the level that human thought, etc., operates at.