The big one that likely upset him (and which he more specifically calls out in a previous piece) was the elimination of the qualified small business exclusion:
Not only did the state's Franchise Tax Board (FTB)
eliminate a tax break on capital gains for small
business owners and investors, it announced the tax
would be reinstated retroactively. This means those
who benefitted from the break can expect a bill for
unpaid taxes, plus interest, stretching all the way
back to 2008.
http://tech.fortune.cnn.com/2013/02/21/the-california-tax-th...