The identity crisis is that they are electric motorcycles/mopeds pretending to be bicycles. Here's a good video on this by someone who has both an e-bike and a motorcycle.[1] He points out that for his commute in traffic, they get about the same performance. But on the motorcycle, he's more visible, has better protective gear, and has a lower center of gravity.

The difference between a class I e-bike (20mph, no helmet required) and an electric motorcycle capable of 45 MPH is a switch. The trouble is, e-bikes with motorcycle speed capabilities lack motorcycle safety features. They're under-braked, under-tired, have crap suspensions, don't have full lights and turn signals, and the rider is up too high, so accidents are worse.

There's a video of someone who put an e-bike motor hub in a small motorcycle frame, which got him something that's a better e-bike than most e-bikes, but is classified as a motorcycle. But low-end electric motorcycles have not caught on in the US. Bikers think they're uncool, and bicyclists think they're uncool. They're popular in parts of Asia. So, yes, there is an identity crisis.

[1] https://www.youtube.com/watch?v=wM8Xli2KTzI