I question whether or not you read the article...

  Still, there’s a lot of groups in the city lobbying against
  any change in taxes, confusing the issue with “corporate 
  welfare.” I’ve read through some of the materials they are 
  sending out, and while a lot of this is politics, there seems 
  to be a lot of genuine confusion between the nature of the
  way big companies, small businesses and startups work.

This isn't a handout; it's an attempt to fix one of San Francisco's competitive disadvantages. I can't blame Twitter for lobbying against an abusive tax code literally found no where else.