I can't find anything referencing a ban on political discussions in the CoC though - did we rescind that policy?
Not to put too fine a point on it, the argument is wrong. That would require public debt to be so high that the interest is greater than GDP. Which means at least 80 times more than you have now, probably more like 200 times more. You could literally borrow the entire world and it would still be a fraction of that.
I don't think there ever was a true rule about politics, but it is kinda like religion. Typically it is avoided to prevent arguments or flame wars from starting. People are pretty passionate about their views in those two areas particularly.
When you are born, you are registered and given a Social Security number. Did you know that you (yes you personally) are on the stock market? Watch this.