Crab.....you have any accident stats to support your opinion or is it. just 60 envy that prompts your comment?
How many instances of Emergency Float systems not working as advertised and to what sea state are they rated?
Modern day engines are pretty reliable and most modern helicopters do pretty well. on one engine at sea level.
Perhaps hovering over an Alpine Lake in the heat of Summer might offer a problem for an OGE hover.
If I had a four engined. helicopter that would hover on one....I might still want a fifth just for insurance.
Sometimes you do have to trust the Engineeers and Safety Mafia when they offer decisions made upon the Laws of Probability as there is. no perfect helicopter yet to be invented.
Look back the the USAF H-3 Jolly Greens and what they did using AAR while doing Combat SAR missions....and later with the CH-53's.
As always in aviation....there is a certain amount of risk in everything we do.....and never is there zero risk even if the aircraft never leaves the ground.