you are making the common disconnect between C amendments that flow to people and definition via amendment which define what classes of “people” are legally entitled to certain constitutional rights at all.
Certain classes are excluded from enjoyment of certain rights afforded to others, i.e, felons - and that is a lifelong term - have no collective, class, or individual right to claim certain other civil rights such as voting or even owning a gun or living next to children.
They may not be deprived of certain rights pertaining to criminal rights such as due process and it's pertinent appendages.
Principles of Constitutional Law 201.
Very common misconception. Commonly believed right here on FR in fact. However, totally wrong. Only fourteen states require any sort of process or request to have voting rights restored after completion of all supervised release, upon completion of parole or simply upon release from prison. The other thirty four have automatic restore provisions. There are two states, Vermont and Maine, that allow voting from prison.