Selective memory
I think certain people are reviewing the past through heavily rose tinted spectacles. The BV 234 was far from a success as a North Sea machine. The vibration levels were unacceptable for both passengers and crew. The unseemly scramble for passengers boarding in an attempt to avoid sitting in the middle of the cabin where the blades overlapped put anything experienced with Easyjet or Ryanair in the shade.
I recall one occasion, during a phase when the BV 234 was operating at reduced VNE because of vibration, when a Bristow Tiger overtook on an outbound Aberdeen radial, lowering its undercarriage as a friendly gesture, thereby prompting an official complaint by British Airways Helicopters of ungentlemanly conduct!