Look how often constitutional ammendments were proposed in the past compared to today. We're fossilizing the idea of our country into a religion instead of continuing to have useful debate on why today isn't like yesterday and on what updates we need to make now.
>"Please don't comment about the voting on comments. It never does any good, and it makes boring reading."[1]
But to address your key point, I'd bet a lot of people are down-voting the grandparent's superior/condescending tone, as exemplified by the following fragments:
>"America’s big problem... yet Americans take it on faith... Americans simply cannot entertain"
I also don't think the rate at which amendments are proposed is a good indication of how healthy our country is. Shouldn't things stabilize and require less revision eventually?
I don't think that's obvious at all, especially given changes in population, technology, and international situations over the same timeframe as that nation's institutional stagnation.