Specifically "On-Topic: Anything that good hackers would find interesting. That includes more than hacking and startups. If you had to reduce it to a sentence, the answer might be: anything that gratifies one's intellectual curiosity." and "Please don't complain that a submission is inappropriate. If a story is spam or off-topic, flag it."
In general, if a story is in the front page it means that hackers found it interesting, so it can hardly be off-topic. But if you still think it's inappropriate for this forum, flag it rather than commenting.
I can speculate that this story is found interesting because many people in tech live in areas like San Francisco where rent prices are a hot topic. Therefore stories about how these kinds of places deal with the problem are relevant.