Oh no, look at all the super dangerous people biking with kids on them.
https://youtu.be/rQhzEnWCgHA?si=qlcN0Y9YrykPIlPe
People really don't fall off of bike seats easily. Maybe you should try biking.
Literally millions of people have bought e-bikes specifically to carry kids. I own one, and my kid loves riding on the back. I have never heard of a kid falling off of one either.
Radbikes even makes a bicycle specifically designed to carry children on the back (the radwagon) - and so does Extracycle, Trek, Lectric, Yuba and half a dozen or so other long tail e-bike brands.