The US doesn't actually control this much of the bitcoin network, but rather 40% of the network is located in the US. This is a very big and important difference.
that's what it says and when 40% of nodes are in usa where there's more network power than any other part of the net you want to say they don't mine 40%, say it.
Then back it up with numbers showing where the most mining is done.
The article states 100% correctly over 40% of btc NODES are located in the USA and nodes do the transactions and mining.
100% FACTUAL
Transactions and mining are done more inside the USA than anywhere if they're 40% of the 8K nodes in the network, now if you got other stats show them.
40% of 8K nodes in the btc grid is USA LOCATIONS
So it seams that most mining is happening in china, and most of nodes and bussinesses are usa based.
Both one and the other is important, but weather its distributed here or there, its irrelevant.