Nothing weird about that situation at all. In fact it's the way much of planet is organized.
These people are assholes.
Nothing of the sort. They're long-term residents looking out for what's best for their community.
And it's exactly the kind of completely gratuitous negativity (project by outsiders, who otherwise couldn't begin to care what goes on in their town), exemplified above, which shores up this instinct that many of them have to protect what they have. Because they know that you're definitely not concerned about what impact projects like these will have on their quality of life and long-term fiscal interests.
No, they're just looking out for themselves. The community is hurt by their greed for massively inflated property values, low taxes, and keeping the younger generation from living the lives they want.
If that makes me negative, fine. But if they are white-washing their behavior by pretending to be concerned for "the community" when really they only care about themselves, yes, that is the very definition of asshole.
Right now, they should drag this out as long and as hard as they can IMO lest they get screwed again. Because if the place didn't smell like a$$ on a daily basis, it would have been discovered and gentrified long ago (I remember checking the place out myself in 2007). It could be a fantastic suburb of SF in a world where win/win usually triumphed over I got mine so @#$% you. But that's not how this area works in my experience.
That one of the major issues I think the Bay Area faces: each township passes the buck to the next: "Why should we build housing, when township X is completely unwilling to do so?" Yes, and they say the same thing about you! With this attitude, nothing will ever get built, anywhere.
The Problem is SF, Oakland and SJ --localities which can/could build if they wanted to but simply don't.
But Brisbane, California is not a "small town" it's a disgusting example of exurban sprawl.
https://www.google.com/maps/place/Brisbane,+CA/@37.679201,-1...
Looking at the map (https://goo.gl/maps/7kvttaK8z7F2), it's not even in Brisbane proper, so I think you're wrong about your assessment.
I have been to Brisbane, the number of large McMansions is very tiny.
Point it the existing built environment of Brisbane, CA is not worth preserving. Its car-dependent nature is a menace to the region.
https://www.google.com/maps/@37.6916572,-122.4087356,3a,90y,...
I think your assessment is a bit heavy handed considering how bad public transit is in the area in general.
That's not what we call an 'exurb', either.
Brisbane is a small town. It is dense, not sprawling. It has a town square and a handful of shops. It has schools. It is surrounded by empty space on all sides. It is in a canyon of San Bruno Mountain on three sides and surround by bay water and rail yards on the north side. You don't know what you are talking about
The entire peninsula is tiny, it's not fair to compare it to Zurich.