It's false, and believing it can only cause you harm, since it'll affect your negotiation with for that remote gig for that US based company.
And the answer to your second question is "anywhere with power and internet." That is the subset of places from which one can telecommute to the USA, where there exist dozens of large software companies that hire remote staff. For that much money. Honest, no foolin'.
It's sad that I find myself repeating this here so often. Nobody seems to want to believe that their industry pays as much as it does.
You're arguing against a point that wasn't made.
+ London
+ Singapore
+ Hong Kong
+ Tokyo
Edit: and NY, Chicago and Houston but that doesn't really make my point.
I have very good reason to believe (I've seen their salaries) also in:
+ Paris
+ Frankfurt
+ Dublin
The trick is to have skills that are needed in industries that understand the value of tech and have the money to pay for it.
Yes, fulltime. Only had one part time on that level.
I know people who approach it for a rounding error in Bloomington IN, Boulder CO, & Kansas City.
You are right though, none of those people are just programming. They are all solving business problems with code.