I think its because a lot of new apartments and Twitter went up straight in the roughest part of town in the early 2010's under Ed Lee's plan to clean up the Ma

I think its because a lot of new apartments and Twitter went up straight in the roughest part of town in the early 2010's under Ed Lee's plan to clean up the Market street Tenderloin area (which is probably not a bad idea long term). https://sanfrancisco.cbslocal.com/2013/11/04/san-francisco-mayor-lee-strolls-down-mid-market-with-anticipation-of-twitters-ipo/ https://sanfrancisco.cbslocal.com/2013/11/04/san-francisco-m... This put the new well to-do Twitter techies in constant daily contact with the original "residents" who were/are down and out on their luck where as before the original "residents" had that end of Market to themselves. The Twitter techies were then very likely to make a big deal about it on social media. It also probably tore down a significant number of SRO units.