I'm just pointing out that if they'd taken one or two more sentences to precisely describe it, nobody would be in any doubt. So instead of looking at the law, they're looking at federalist papers and such that only represents the opinions of some of the founders, not something actually agreed on and passed as law.
I agree with your points - but it raises further questions for me.
Why are the founders' opinions so important? Why do we spend so much time, effort and money arguing about what some people thought about something in the past rather than deciding what is the correct decision for today, in our society?
As someone who moved to the US from a country without a formal written constitution I find the obsession with it's minutiae somewhat baffling - it's treated the same way as the Bible, as some kind of holy truth handed down from a divine being. In fact it's just a bunch of opinions of some people who happened to be in charge of the country a bunch of years ago. Those opinions could be irrelevant to today's USA, they could even be wrong (*gasp*) and might even have been wrong back then! Why we give those opinions more weight than our own (and those of the leaders we actually elected) is a bit of a mystery to me.
This isn't to say I disagree with having an enshrined set of rights and principles for government, I actually think it's a good thing. But if something in it is ambiguous or unclear (or simply outdated) it seems to me far more sensible to just decide how it should be rewritten (starting from a clean slate) than try to guess what the person who originally wrote it meant - it really doesn't matter.