Earlier quoted context omitted.
Really - "This is the most thriving technical community in the entire world"? I'm calling BS. Have you been to New York City recently? Rents for a 1 bedroom are nowhere near that. Lets talk about that community - there are meetups? Wow. You can go to a meetup on any night of the week in New York or Austin. Besides that explain "the community"? Oh you go out and drink craft beers after work? You can do that anywhere.…
I don't agree with the amount of vitriol in your comment, but I agree with the overall sentiment. I feel like tech workers in San Francisco are fully bought-in to the "this is the best and only place to be if you're in tech" idea. So much so that they can't quite see that the grass is just as green on the other side, so to speak. You have to be fully bought-in to it, there's no other way you would be able to justify…
I used to live in Boston (which at the time was the #2 tech scene in the country, but has probably been eclipsed by Seattle/NYC/Austin by now). There were startups and meetups and hacker spaces as well, including a number of famous ones.
The Bay Area is a huge difference in degree. The difference is that you had to find the "tech scene" in Boston, while in Silicon Valley, tech is the scene. If you go out for coffee, nearly everybody in the coffeeshop will be working on some tech startup. If you sit down at a restaurant, there's a good chance that the table next to you will have a group of engineers from some large tech company, or an investor being pitched by an entrepreneur, or a group of friends planning a startup. If you go to a random party - even ones thrown by non-techies - half the people there will work in tech.