Many states now define the Second Amendment with regards to concealed or open carry weapons, with federal and state restrictions placed on the sales and aquisitions of handguns. There is no logical reasoning state and federal governments can't better define and restrict the continued adulteration of the Fourteenth in the same manner.
That's very true, there's so many examples of where the Constitution is treated as a living document. The 14th Amendment could easily under those rules be redefined to better work for what is needed today. But they don't really need to do that if the courts and Congress just read what the authors of the Amendment intended instead of playing pc games.