Ehh, people will fight tooth and nail to oppose development literally on top of public transit access. Look at the fierce opposition to MacArhtur Commons (which is getting built, thankfully!) at the MacArthur BART stop and at the opposition to any and all dense infill near the West Oakland BART stop. These are one and four stops from San Francisco, respectively...

There's always opposition, to everything. That's called "politics". But the long term trend is clear: when you build transit, density follows.

In any case, building transit (something that benefits existing residents) is a more successful long term approach than telling local voters that they're idiots for behaving rationally.