Twitter chief in 'The Switch'

The Switch, Washington Post technology newspaper on June 11 discussed that Twitter chief executive Dick Costello will step down on July 1.  Is it due to constant criticisms?  Or a lack of increase in earnings since 2013?  Chris Sacca penned that the service was currently too hard to use, scary and alienating for new users.  Does this mean that the interim chief executive will transform the media service so that it's stock potential will increase, overnight?  Will Dorsey be capable of leading the company into its next phase of growth?  We will sure be tweeting about it.

http://www.washingtonpost.com/blogs/the-switch/wp/2015/06/11/twittter-chief-executive-dick-costolo-to-step-down-july-1/