Freedom to differ is not limited to things that do not matter mush. That would be a mere shadow of freedom. The test of its substance is the right to differ as to things that touch the heart of the existing order.
“The real beauty of it - key to my life was playing key chords on a banjo. For somebody else it may be a golf club that mom and dad put in their hands or a baseball or ballet lessons. Real gift to give to me and put it in writing.”