Of course it wasn't. It was made necessary by violations of individual rights by states after the civil war. Gun rights violations, among others, were listed in the ratification debates.
The 14th amendment has only served as the vehicle for the Federal government to impose its will on every citizen of every state.
The tired old 'evil amendment' fallacy, -- agit-prop spread by the 'states rights' authoritarians.
The fact is, the 14th amendment is responsible for "Brown v board of education", "Roe v Wade", and a host of other social engineering decisions. The 14th amendment has only been used as an argument by conservatives in one case. That was the Florida situation in the last election and ironically, the final decision was not won on that argument.
Socalled 'conservatives' want states to have the power to ignore the constitution. They are Rino statists, not true conservatives who honor individual liberty.
Then why has the 14th only been used to advance Federal government domination and the causes of the left? How has the 14th returned your 2nd amendment rights in California? Are you in fact a fan of big Federal government?