No it is not, RWP, appeals to authority notwithstanding.
Go get Feynman's lectures on physics, or some other book on QM (I like Baym's lectures, but they're out of print), work through the chapters on photon polarization and on angular momentum, and you can derive everything I wrote from first principles. I gave you the result of the experiment; but you won't understand it in any real sense until you've learned some elementary algebra of 2 X 2 and 3 X 3 matrices. It's not difficult math, but there's no substitute for it. A reluctance to do the necessary work to understand QM on your part does not constitute argument from authority on my part.