Since the “right to vote” is not explicitly stated in the U.S. Constitution except in the above referenced amendments, and only in reference to the fact that the franchise cannot be denied or abridged based solely on the aforementioned qualifications, the “right to vote” is perhaps better understood, in layman’s terms, as only prohibiting certain forms of legal discrimination in establishing qualifications for suffrage.
There’s a very important distinction – a legal distinction recognized in judges’ rulings – between prohibitions on discrimination and actual recognition of a basic “right to vote” for the people as a whole. If such a right actually existed, then courts would have a basis for upholding it. But they don’t, because the “right to vote” is vanishing Constitutional vapor – not really there, because USA was never intended to be democratic. (Only to hoodwink some residents into thinking themselves represented.)