Then you understand nothing either.
Ginni Thomas is an activist. As such she is about as sane as AOC.
There is an authoritative citation.
Even it admits that it is not the usual interpretation.
The Constitution is called living because it can change and adapt. This is a literal reference to the built-in amendment process. What you are describing is judicial activism.
The Constitution of the United States is referred to as a "living document" because it the architects of the document intended for it to be adapted by future generations. It is because it is adaptable, that amendments could be ratified, or added to it.