Funny thing is that those missions where a second engine could really save the day during an engine failure are mostly done by single engines: aerial work. Money and not safety talks here.
Statistics are famous for the fact that they can be twisted the way the users wants.
If I am doing a powerline inspection in, let’s say a H125 and the engine quits I am dead... if I do the same in a H135 I would simply fly away, RTB and have a beer. That engines generally fail very rarely, THAT is a good thing. That OLD twins are actually a “handful” when an engine fails is also true... however modern FADEC regulated twins with power to spare once in OEI definitely have their benefits.
Also would not enjoy a forced autorotation in IFR with the clouddeck at 300ft in a Single whereas in a twin the only thing that really would happen is that your endurance increases!