This somewhat counters the idea that Mississippi is comparable to the middle of the EU pack based on per-capita GDP. But the comment I replied to said that the

This somewhat counters the idea that Mississippi is comparable to the middle of the EU pack based on per-capita GDP. But the comment I replied to said that the entire US is "basically a third-world country masquerading as a first-world one." The HDI of the US according to your links is #17 in the world, tied with New Zealand, and just above notable third-world hellholes like South Korea, Austria, and Japan.