Delivery-oriented ebikes like the Arrow models in NYC use very large battery packs, and some deliveristas carry a second battery on a rear rack. My impression is that, as deliveristas have moved to working for apps rather than specific restaurants over the past few years, the expected delivery radius has expanded, which drove a lot of the range issues that have lead to widespread adoption of gray-market motorcycles with no plates.

Said unlicensed mopeds are current subject to widespread seizure in NYC, so it does seem like ebikes are coming back.

One major delivery-oriented ebike importer, 'Fly Ebike', has gotten a model UL certified.