You're correct about everything except for me having it backwards.

The Constitution's intent was made plain by the wording. There is no ambiguity.

The laws that have been created since, billions of pages of them, were written deliberately to be ambiguous so that the intent is hidden, and the crafty little wordsmiths can twist its meaning.

We are discussing two different things, and that's one of the legal slight of hands they pull to keep us divided.

I suggest this was intentional.