I hate to bring this up again, but one of these days this is going to blow up all over the media and there will be a big backlash against e-bikes:
https://pubmed.ncbi.nlm.nih.gov/3573...en%20and%20men.
Several studies have shown that cycling regularly, particularly road cycling, without a combination of off-road cycling/ running/ impact exercise, leads to a decrease in bone density especially in the hip area. The phenomenon is seen at all ages (adolescents and adults), in women and men.
Even regular cycling doesn't provide enough load to load the bones. E-bike will lessen that load even more.
I think all e-bikes must have a function where every 5 minutes it will reverse the load cycle and force you to stand up and ride doubly hard to recharge the battery.