I didn't mean classical physics is negated in the sense of being proven incorrect in its measurements but in terms of its fundamental axiomatic paradigm of an objective universe that is independent of the observer.

Talking about freewill or the lack thereof is only within the realm of phenomena indeed. It's a question everyone wonders at some point or other so it's good to have clarity that both have their place - freewill and no freewill.

It's true that such discussions neither make sense to the deluded nor do the seers bother with them. But there are those in between. Buddha beautifully captured it when asked why he gave sermons? He said it is for those whose eyes have "a little dust".