Certainly the ones who oppose it are wealthy elitists.
On the other hand, everything I have ever heard about this idea of "filling in" seems like homeowners who want to rent out their alley without having to conform new-built residences to code so they can maximize $$$$$.
Do other cities have this "movement"?
Oh no comrade, I wasn't trying to say that you were editorializing in the OP title. I could have been clearer that I was referencing the title of the blogpost (unless that's your blog... which I hope not... because that would be a bit awkward)