Is DC Comics A Sinking Boat?

A few months ago, James Robinson announced that he was leaving DC Comics. Robinson's departure came on the heel of Rob Liefeld, Andy Diggle, Joshua Hale Fiakov, and Tony Daniels, who had also left DC Comics because of editorial defections. Now, J.H. Williams III and W. Haden Blackman are leaving Batwoman after issue #26, also because of conflicts over editorial decisions:

"Unfortunately, in recent months, DC has asked us to alter or completely discard many long-standing storylines in ways that we feel compromise the character and the series[.]

We were told to ditch plans for Killer Croc's origins; forced to drastically alter the original ending of our current arc, which would have defined Batwoman's heroic future in bold new ways; and, most crushingly, prohibited from ever showing Kate and Maggie actually getting married. All of these editorial decisions came at the last minute, and always after a year or more of planning and plotting on our end. [...]

We can't reliably do our best work if our plans are scrapped at the last minute, so we're stepping aside."

With the above, Williams and Blackman leave what they both call "a dream project for both of us". Despite the number of departures from DC, their co-publisher Warner Bros. stated during a Comic-Con interview that departures are "the normal course of business" and that "it's actually been a little bit less in the last decade than it's ever been."