Here is the referenced Bitcoin Magazine article: https://bitcoinmagazine.com/business/bitcoin-mining-concentration-in-america

I agree that hashpower overly concentrated in one jurisidiction is a threat. But I'm not sure this is a result of patriotism, as the article implies. Probably USA just has cheaper power than Europe and laxer regulations compared to most other countries.

Some of scenarios laid out in the article, like a fully deanonymized permissioned network, would probably result in a hard fork.