I'm not sure it makes sense to insult a nation (one that happens to be extraordinarily diverse in most every respect) in response to one person presenting a lacking argument.

Your blanket statement is equally valid when applied to every country on earth.

How am I insulting a nation? Just pointing out it's absurd to come up with that reasoning and decide most developers that decide not to live in the SF Bay Area isn't good enough or too pessimistic. I don't find it insulting some people may prefer e.g. Europe over the US and that alone doesn't seem indicative of their development capabilities.