I don't think there is one answer to your question.
Having followed the news it has become clear to me that the type has had an extraordinary amount of problems over the years. Somewhere I read that it has caused more than 50% of the rescue standby alarms at CPH even though it represents only 10% of the operations (or thereabouts). So far the consequences have been limited to decreased passenger confidence in the type, but following these accidents the company had to act resolutely to avoid further badwill. That's how I see it anyway.