This is WRONG.
Newtonian mechanics does not explain quantum mechanics because it cannot deal adequately with what is now known, not because it is simple. Newtonian mechanics deals with idealized point masses or extended bodies. It has nothing to say about electromagnetic waves or tiny forces in atoms since neither were even known at that time. No one even knew about atoms much less electrons and tiny sub atomic particles. What you have written above is a clear misunderstanding of science especially the history of science.
Furthermore QM does adhere to Occam's razor quite beautifully. It predicts the behavior electrons and other "tiny" phenomena by suggesting a range of possibilities as well as impossibilities which makes it quite elegant(beautiful in its simplicity). Just because the math is difficult does not make the outcome sloppy containing unnecessary explainations.
Do you get it?
You think because something is mathematically difficult it somehow contains extraneous explainations is silly. This is what you have basically written above. QM is difficult to visualize physically as were othe physical phenomenon way back in the history of science. You might claim, looking back from today, Newton's first law obvious because it is today. Well it's not obvious to observations at that time or even today. How many things do you witness today when you walk outside that are moving in straight lines at constant speeds? The third law is clearly not obvious even today as given by sample surveys. Both of these ideas are used to do Newtonian mechanics, which is not difficult mathmatically because it is set up in problems where many real world forces are left out to make it doable. The ideas of the 1st and 3rd laws are used to be able to carry out the math most simply stated in the 2nd law which still holds today.
We will continue to mathmatically model physical phenomena and the models will change. We will find some mathmatical models used today will NOT suffice for future predictions based on those models. You do not necessarily live in an enlightened period where things are more difficult because YOU happen to live in THIS period of modeling. In Newton's time people were NOT merrily walking down the street drawing free body diagrams claiming how simple his ideas were. Or the math.
Now.
Enough.
There are only so many times I can repeat myself.