"That's because the article is pretty much boilerplate."
That's Reason magazine.
SF has had two housing crashes in the last 30 years. This discourages building large numbers of apartments. There's a tall apartment building near Twitter HQ which was vacant for over a decade. It takes a long time to pay off an apartment building. The boom may not last. Check out the Pink Slip Parties of 2001, when it collapsed last time.[http://www.sfgirl.com/gallery_pink/pinkslip4/ps4.html].
It will all start tumbling down when Twitter goes under. Their stock has gone from 70 to 18 in the last year and a half, and they're not profitable. Figure that anything that's large and not profitable at this stage in the cycle is headed for trouble.