I've spent a good deal of time on this subject. In my opinion, this article did little to nothing and the parent here is a very valid critique. The argument it made is basically "We can't accept determinism, but hey, it's not true because there might be quantum randomness."

I think it's important to highlight something here - history is fraught with people on both sides of "this is random" and "this is predictable in this way" being wrong. I would not be surprised to find that further research in physics over centuries ends up showing what we currently see as "randomness" is simply a very complicated system. Even if you are able to rest bigger arguments on top of quantum randomness, it's not exactly a sturdy base coming from the bleeding edge of physics.

It's also very common among in the community of this debate to get bogged down in the theoretical and not look back to the very real applications of free will concepts in the world. Many of the distinctions they make are not really useful for humans, and they haven't realized even the most basic parts of the arguments can have radical societal effects.