If we look at the history of S-61 accidents then the ones in the back may not be the biggest issue. Two other things are going on.
The 234 stood out because it carried a lot of passengers and put a larger number of people at risk in a single event.
The Super Puma stands out because it has been the dominant offshore passenger carrying tool in the internet age when the outrageous views of the ignorant carry more weight than informed alternatives.