There's no problem reconciling the quantum with the Newtonian. Quantum mechanics recovers Newtonian mechanics in the appropriate limit. The problem is reconciling the quantum and the Einsteinian.
In particular with general relativity.
Quantum field theory (QFT) is quantum mechanics + special relativity
But there’s no quantum explanation of gravity, right?
In particular with general relativity.
Quantum field theory (QFT) is quantum mechanics + special relativity