She's comparing apples and oranges, and doesn't even realize it.
$3,447 is the asking price for apartments now on the market. $1,600 is the median rent price people are actually paying, including people with rent control and affordable housing. People who have been living in rent-controlled apartments for many years pay a fraction of the current market rate.
As a result, her second and third conclusions don't follow. If this is the kind of critical reasoning that comes with "an MBA from a top school, the rigor of an engineering education and a decade and a half launching and managing some of the most successful businesses for Google and other tech companies," it's worrying.
In fact, it's easy to find actual market rate rent prices from 2016. According to the sites below, it was around $3,500, so rental prices have remained very flat over the last few years.
[1] https://www.zumper.com/blog/2016/05/zumper-national-rent-rep... [2] https://www.rentjungle.com/average-rent-in-san-francisco-ren...