So it can be argued that free speech may be squelched by a state law. Freedom of religion, assembly, etc. Charming.
Well, it could be argued that, although I wouldn't expect such an argument would prevail.
My point to pabiance (without really commenting on the merits of the case), was that McDonald is rooted in some very complicated, and unquestionably controversial and contentious issue of Constitutional Law - the incorporation doctrine.
I was also highlighting, just as a point of interest, is that liberal/conservative has somewhat flip-flopped on this matter in the last several decades, precisely because of the 2nd Amendment - it's not a value judgment, just an observation.