Groupthink is when a group tries to prevent information being considered. All of the those you mention are the opposite, attempting to flag up very real issues that potentially grave implications. Groupthink is saying "we can safely ignore that.....[whole ship aspects]". and launching ad hominem attacks against anyone expressing doubts - such as former CVS Captains or retired Admirals.
Or Groupthink could be blaming the RAF for all of your woes for the last 50 years? Perhaps the risk impacts associated whole ship integration were measured against those of not being able to cope with ongoing operations and so were accepted?
Perhaps if the SDSR had no been changed so much in the last minute, better decisions could have been made?
Perhaps worse decisions or no decisions would have been made?