Not only are you not quite addressing my point, you are also relying increasingly on semantic minutiae to build your arguments - you are effectively grasping at straws.
Indeed, opinions are belief. Nowhere have I disputed that. However, belief, when dealing with something related to the physical world, needs to be based on reasons, which are in turn subject to criticism. If those reasons can't withstand the test of peer review, the opinion is baseless and therefore is utter nonsense. The problem is how opinions are expressed. "Rembrandt is a crap artist" is not opinion, it is a statement of fact. That sort of statements are either right or wrong, because they deal with empirical aspects of the physical world. Beethoven's mastery of music alone is objectively superior to that of other musicians, regardless of whether it's your cup of tea or not. "I don't like Beethoven", however, is a perfectly respectable opinion.
YES