It is actually quite the contrary. Electric bikes should bring bikes back as full members of the public traffic. Yes, some people are terrified to drive amongst cars. But the so called bike paths are the actual death traps, as most of them have dangerous encounters with the car traffic where it is the most difficult to spot bicyclists, that is at crossings. A large amount of the bicycle deaths are caused by trucks turning right across the bike path, killing a bicyclist. Furthermore, at least in Germany, they are not in a shape for comfortable riding. The only ones enjoying bike paths are unexperienced and untrained bicyclists, who ride a long at little more than walking speed.
Any reasonably seasoned bicyclists easily bikes at 20-30 kph in the flats, so by far exceed the safe bike path speeds. Electric bikes give this speed to anyone, who might be older, or is commuting and does not seek the sporty challenge. This requires proper bike traffic handling by the authorities.