"For some reason Bangalore is crawling with people who first want to form a community and then start learning/working/whatever." Seattle is the same. Probably the same everywhere. It's easier to talk and drink coffee than to challenge yourself way outside your comfort zone for hours at a time, day after day.
I agree with the author though that this path rarely works. A better way is to first you dive into something that interest you and then you go find other people with the same interest.