So, in your view, where does that leave the concept of free will?
I already discussed this: it leaves us with exactly the ability to describe what actually happened, particularly after the facts, from any one of an infinite number of reference frames.
When what actually happened was someone deciding to not think deeply about their actions despite being asked to repeatedly; that leaves them responsible for being an idiot and not listening to others.
The issue comes in understanding that when two systems come to different conclusions on the truth of something, one or both is wrong about their observations.
That wrongness can be ascribed directly to the thing reaching the conclusion, without need to dig further into why they are wrong in that moment.
There are plenty of moments where "he did it because noise overcame signal". It's not very satisfying, but that's the point. It's the one time "the big bang did it" actually pans out.
This actually gets us to the point where we are observing it in the Newtonian scale.
Also, I'll note with regards to the Newtonian scale events and the split between quantum group-concepts giving way to more classical physics, it just means we have to think of the particle not as a fixed group with static so gilar structure, but as a permutation group.
To understand this next part requires some group theory reading;
Imagine for a moment that if, instead of just one way to represent a "group", there were as many ways as the shape has permutation groups; that the thing really important to how it behaves are not where the points or necessarily even how many of them, but that their connection scheme has some abstract property, and it is this shared abstract property across the permutations that actually generated the quality we are looking for.
In this way, it wouldn't matter which of the "micro-states" lead to the "macro-state", it is the quasi- or meta-particle properties that matter.
So humans, instead of focusing on all this shifting junk of QM, end up seeing the invariants of the more abstract properties between them.
These in turn are what we see on the scale of Newtonian physics.
This means that the mechanics of freedom and wills from compatibilist leaves us with the ability to debug, blame, respond, and be responded to in ways that allows us to meaningfully apply controls to who we are and manage outcomes so that our wills remain more free with respect to accomplishing our goals.
It tells us a tiny little fact about reality that lets us more adequately get what we want and survive.
It also lets us know that things like "the empty self" are really a lie on behalf of empowering others and convincing us atrophy some part of our brain's ability to do something important for our survival.
Instead of trying to kill some important-seeming part of ourselves, we should be focusing on understanding the frames of reference that the heuristic of self produces, and the nature of the interaction of those things in REAL terms so that more of the inevitable action of the human race becomes compatible, and thus achievable by its members rather than rotting our minds with the idea "it couldn't have turned out differently", when the reality is merely that it "wouldn't"; it turns out differently every day, and where it doesn't, it IS the fault of stuff there, from the perspective of the goal.